Best Free IT Security Software of 2026 - Page 13

Signer.digital is a range of solutions that offer innovative ways for users to sign documents and files. It rages of options like Bridge Application, REST APIs Web Server and Web Libraries, DLLs, and Free Signer.digital Extension. Signer.digital Bridge can be set up in minutes to digitally sign with any existing ERP or application. The web server and libraries are compatible with any signer.ditial application via REST APIs. Signer.digital Browser Extension allows seamless PKI operations across all modern browsers, including Chrome, Edge, and Firefox on all OS platforms. Users can perform PKI operations like signing, encryption, verification, authentication, and downloading of digital certificates etc.

Top attack vectors like phishing, smishing, credential stuffing, and BEC all rely on exposed employee PII—and data broker sites are a primary source. Optery for Business helps security teams proactively eliminate this threat by scanning for and removing employee personal data from hundreds of sites on a recurring basis. Optery’s platform combines patented search technology with automation, AI, and expert manual oversight to deliver the most comprehensive data broker removals available. We average ~100 profiles found per employee—significantly more than competing services—and remove them using opt-out automation enhanced by Limited Power of Attorney (LPOA) and Authorized Agent Requests where applicable. Enterprise customers gain continuous visibility through automated monthly scans and detailed before-and-after reporting, while platform partners can white-label Optery’s capabilities via API. Recognized with multiple industry awards, Optery is trusted by hundreds of businesses to reduce risk and prevent social engineering attacks. Top attack vectors like phishing, smishing, credential stuffing, and BEC all rely on exposed employee PII—and data broker sites are a primary source. Optery for Business helps security teams proactively eliminate this threat by scanning for and removing employee personal data from hundreds of sites on a recurring basis. Optery’s platform combines patented search technology with automation, AI, and expert manual oversight to deliver the most comprehensive data broker removals available. We average ~100 profiles found per employee—significantly more than competing services—and remove them using opt-out automation enhanced by Limited Power of Attorney (LPOA) and Authorized Agent Requests where applicable.

Treblle is a federated API Intelligence platform that unifies API visibility, governance, and security in a single enterprise-grade solution. Designed for complex environments, Treblle connects seamlessly through one integration and supports deployment on-prem or in private cloud—meeting even the strictest regulatory and data residency requirements. Once integrated, Treblle instantly maps your entire API landscape with automatic discovery, generating real-time inventories and eliminating shadow APIs. Its observability tools track every request and response, surfacing performance issues, anomalies, and SLA breaches across all services. Advanced analytics give teams insights into traffic, latency, endpoint usage, and client behavior, making debugging, optimization, and scaling easier and 15 times faster. Security is built-in, not bolted on. Treblle provides runtime protection, threat detection, schema validation, and governance policies to safeguard APIs across environments. It empowers DevOps and platform teams to implement shift-left strategies and enforce consistent practices across the lifecycle. With its AI-powered Integration Assistant, Treblle simplifies onboarding and improves developer workflows. Whether you’re running internal microservices or customer-facing APIs, Treblle gives you the clarity and control to move faster, reduce risk, and scale with confidence.

Onboardbase is a secret management platform that provides a single source of shared truth regarding app secrets and usage. It allows dev teams to securely share and work together with environment-specific configurations at every stage of development, synced across infrastructure and without compromising security. This allows developers to focus on building great apps and not managing secrets. Secrets are dynamically updated across your infrastructure and environments with 50+ integrations. Dev teams can track and audit how long, where, and when secrets are used. They can also revoke any usage with a click. Strong, always-on codebase scanning features prevent developers accidentally leaking secrets into production. This maintains a strong security model.

Clerk offers a full-stack authentication and user management system designed for modern web applications. It provides secure APIs and drop-in UI components for sign-up, sign-in, user profiles, multi-factor authentication (MFA), and organization management. Clerk supports frameworks like Next.js, React, Vue, and Nuxt, with built-in OAuth, SSO, and RBAC (Role-Based Access Control). Focused on developer experience, Clerk eliminates the need to build authentication from scratch, ensuring security and scalability without sacrificing flexibility or control.

User auth for web and mobile apps with industry-leading security and passwordless login convenience for end users. Vault Vision's low-code user authentication platform allows applications to securely manage user auth and login management. Our platform helps application owners increase user login engagement with passwordless application logins powered by mobile passkeys, two factor auth (2FA), multi-factor auth (MFA), face id auth, fingerprint auth, USB key auth, pin based auth, SSO with email, OIDC logins for Apple, Google and Microsoft, and more.

Authkey.io stands as an exceptional Enterprise Omni Channel API platform, offering an extensive suite of communication tools and APIs meticulously designed to empower businesses in their quest for efficient and secure customer engagement. SMS API:A seamless communication symphony with its event-based messaging prowess. This facet encompasses the seamless orchestration of Bulk SMS delivery, transactional messages, one-time passwords (OTP), and the authentication process through call-based interfaces. Voice API: This dynamic capability ensures the delivery of OTPs through vocal messages, providing an alternative avenue that ensures the recipient's prompt access. Email API: Reliable and rapid delivery of emails, serving critical functions such as password verification, account creation, OTP distribution, and email validation. WhatsApp Business API: The contemporary business landscape requires a direct conduit to reach the massive audience on the WhatsApp API facilitate this engagement, enabling businesses to establish a direct line of communication with their audience. Two-Factor Authentication (2FA) API: Seamlessly dispatching OTPs, verifying logins, and bolstering the security architecture of business software, CRM systems.

Panoptica makes it easy for you to secure containers, APIs and serverless functions and manage your software bills of material. It analyzes both internal and external APIs, assigns risk scores, and then reports back to you. Your policies determine which API calls the gateway allows or disables. Cloud-native architectures enable teams to develop and deploy software faster, keeping up with today's market. However, this speed comes at a cost: security. Panoptica fills these gaps by integrating automated policy-based security and visibility at every stage of the software-development process. The number of attack points has increased significantly with the decentralized cloud-native architectures. Changes in the computing landscape have also increased the risk of security breaches. Here are some reasons why comprehensive security is so important. A platform that protects all aspects of an application's lifecycle, from development to runtime, is essential.

Descope is a CIAM platform meant for developers and IT teams. Customers can easily create frictionless and secure user journey flows for each user interaction using our no-code workflow builder and SDKs. Descope allows developers to spend more time working on core app projects by abstracting the details of authentication methods, session management, and risk management. Our platform makes it easy to manage users, tenants, RBAC, SCIM provisioning, and identity federation without any hassle. Customers use Descope to enhance user experience with passwordless authentication, improve security with risk-based MFA, and centralize user identities across all business-facing apps.

Explore the comprehensive capabilities of CyberHoot's Autopilot, a unified security management platform designed to optimize efficiency. This solution integrates seamlessly to offer streamlined security training, phishing simulation, and dark web surveillance, all while simplifying the client integration process for MSPs. Leveraging the innovative, zero-configuration HootPhish technology, Autopilot automates the scheduling of regular training and phishing assessments. It revolutionizes user engagement by eliminating passwords, instead granting access to tasks via straightforward email links, significantly enhancing ease of use. Autopilot offers a competitive flat rate of $199/month for up to 2500 users.

Who has access to your emails? In the case of traditional emails, they can be viewed by you, the recipient, all email service providers, and potentially others. However, with end-to-end encryption, only the sender and intended recipients have the ability to read those messages. The iOS application Letterbox simplifies the use of end-to-end encryption, is compatible with a majority of email services, and utilizes the standard encryption protocol OpenPGP. While Letterbox functions similarly to other common email applications, it highlights the security status of both incoming and outgoing messages, allowing users to differentiate between confidential and insecure emails. As a free open-source email client on iOS, Letterbox is part of an ongoing research initiative at Freie Universität Berlin. Though still under development, users will soon be able to access the app on their devices through Apple's TestFlight platform, ensuring that secure communication is more accessible than ever. This advancement aims to enhance user awareness regarding email security while providing a user-friendly experience.

Traditional packet filters are gradually becoming outdated, as even open-source solutions are shifting towards Next-Generation Firewalls. OPNsense stands out as a leading option for features like intrusion detection, application control, web filtering, and antivirus protection. No network, regardless of its size, is immune to potential attacks; even devices in home networks, such as washing machines and smartwatches, are at risk and need robust security measures. Firewalls play a crucial role in a comprehensive security strategy, shielding systems from both established and emerging threats. The effectiveness of a firewall is maximized when its capabilities are well understood, it operates intuitively, and is strategically placed within the network infrastructure. OPNsense rises to the occasion by fulfilling these essential requirements in various ways. This book serves as an invaluable guide for anyone looking to comprehend, install, and configure an OPNsense firewall effectively. Ultimately, understanding the intricacies of OPNsense can empower users to create a more secure digital environment.

Mindgard, the leading cybersecurity platform for AI, specialises in securing AI/ML models, encompassing LLMs and GenAI for both in-house and third-party solutions. Rooted in the academic prowess of Lancaster University and launched in 2022, Mindgard has rapidly become a key player in the field by tackling the complex vulnerabilities associated with AI technologies. Our flagship service, Mindgard AI Security Labs, reflects our dedication to innovation, automating AI security testing and threat assessments to identify and remedy adversarial threats that traditional methods might miss due to their complexity. Our platform is supported by the largest, commercially available AI threat library, enabling organizations to proactively protect their AI assets across their entire lifecycle. Mindgard seamlessly integrates with existing security ecosystem platforms, enabling Security Operations Centers (SOCs) to rapidly onboard AI/ML solutions and manage AI-specific vulnerabilities and hence risk.

Errsole is a free open-source logger for Node.js applications. It comes with a built-in log viewer to view, filter, and search your application logs. 1) Minimal Setup: Just include the Errsole package in your code—no need for dedicated servers, software installations, or complicated configurations. 2) Logger++: Errsole automatically collects all logs from the Node.js console. Additionally, it provides advanced logging functions that support multiple log levels and the ability to attach metadata to logs. 3) Store Anywhere: Store your logs wherever you want—whether in a file or any database of your choice. You can also configure log rotation to specify how long logs should be retained. 4) Log Viewer: View, filter, and search through your logs using the built-in Web Dashboard. Secure authentication and team management features ensure that only you and your team can access the logs. 5) Critical Error Notifications: Get immediate notifications when your app crashes or encounters critical errors. The notification includes the error message, the app name, the environment, the server name, and a direct link to view the error in your logs.

Authentication is a pivotal moment in your customer's journey. With Kinde, you can take full control. We provide passwordless authentication, social logins, and enterprise SSO to give your users flexible, secure access. You can fully customize the UI with your own designs and domains, ensuring a seamless, on-brand experience. For complex needs, our powerful workflows let you run custom code during authentication. Plus, you can easily organize business customers using our organizations feature, allowing you to fine-tune the experience for each one. Beyond authentication, Kinde helps you monetize your business quickly. You can effortlessly create subscription plans and collect revenue. Our platform is built to support B2C, B2B, and B2B2C business models, with robust organization management and flexible billing logic that scales as you grow.

Cloud-based solution for observability that helps businesses manage and track workload and performance through a single dashboard. Monitor all the services you run on your cloud without compromising cost, granularity or scale. Groundcover is a cloud-native APM solution that makes observability easy so you can focus on creating world-class products. Groundcover's proprietary sensor unlocks unprecedented granularity for all your applications. This eliminates the need for costly changes in code and development cycles, ensuring monitoring continuity.

ALTCHA is a CAPTCHA alternative which uses a proof of work mechanism to protect websites and online services against spam. ALTCHA uses a mechanism of proof-of-work to protect your website, online services, and APIs from spam and unwanted material. Unlike other solutions ALTCHA is open-source, self-hosted and free. It does not require external services and does not use fingerprinting or cookies.

Tencent EdgeOne is a comprehensive CDN and security solution that accelerates content delivery while providing robust protection. Engineered for high-demand environments, it offers extensive DDoS mitigation and an advanced WAF to defend against common web attacks like SQL injection and XSS. Built on Tencent’s vast network experience, EdgeOne delivers optimized performance across global and domestic markets, with specialized infrastructure as a leading China CDN provider. This makes it an ideal choice for developers and businesses looking to serve fast, secure content to users in China and beyond.

Logmanager is a centralized log management platform enhanced with SIEM capabilities that radically simplifies responses to cyberthreats, legal compliance, and troubleshooting. By transforming diverse logs, events, metrics, and traces into actionable insights, it helps security and operations teams respond swiftly to any incident. Experience effortless self-management and customization, peerless functionality, and the flexibility to take control of your entire technology stack. – Effortlessly aggregate and standardize log files from diverse sources into one unified platform. – Enjoy rapid deployment, 140+ built-in integrations, and effortless scalability. – Get real-time visibility into security events to quickly detect, analyze, and address threats. – Use dozens of predefined security dashboards or customize your own views. – Set up alerts based on multiple trigger conditions or custom-defined rules. – Transparent pricing with no hidden fees. Pay as you go, scale as you grow.

The CLEAR™ Cryptosystem is a FIPS-140-3 validated encryption SDK designed to secure files, streaming media, databases, and network communications with cutting-edge, programmable encryption technology. Fully compatible with all modern computing platforms, CLEAR™ provides a simple, turnkey solution for integrating advanced encryption into existing security systems. With Post-Quantum Cryptography (PQC) capabilities, it delivers future-proof protection against emerging cybersecurity threats, ensuring your data is secured with the strongest available encryption methods. Key Features: • PQC Encryption Strength ( 512bit - 10,240bit) • Ultra Low-Latency Streaming (< 11µs / Packet) • Hyperkey™ Technology with embedded ACL • Multi-Factor / Bio-Metric Symmetric Keys • Plug-N-Play Entropy - CSRNG, QRNG, HRNG Benefits: • Pass cybersecurity audits with best-in-class tools • Share data securely via Sharepoint, Dropbox, etc. • Protect legacy gear and outdated network equipment • Extend protection to files in 3rd party portals • Future lasting power - long-term data archival

Palisade is the only DMARC automation solution designed specifically for MSPs. We make managing email security and compliance straightforward by allowing MSPs to oversee multiple domains with ease, simplify authentication processes, and transform detailed DMARC reports into actionable strategies. All through a single pane of glass. Boost efficiency, lower operational costs, and unlock new revenue opportunities while ensuring exceptional email security for your clients.

Phishing Club helps security teams run authorized phishing exercises and red team operations from one self hosted platform. Install it on your own server with a single command or run it through Docker, then build, send, and track campaigns from a web dashboard backed by a REST API. The tool covers the full workflow: design multi stage lures, target recipients imported by CSV or synced through SCIM, schedule delivery around business hours, and send through SMTP or an OAuth capable API. Results come back as live analytics, per user event timelines, and emailed PDF reports. Service providers can separate clients through built in multi tenancy, and admin access is protected with MFA and single sign on. For offensive engagements it adds reverse proxy and remote browser phishing, session capture, content and URL rewriting, traffic obfuscation, JA4 and geo IP controls, and device code attacks.

Identity is a core element of software architecture, and too often, solutions force enterprises to choose between control and commercial readiness. You end up locked into rigid platforms or forced to sacrifice security for flexibility. Duende IdentityServer eliminates this compromise. We are a secure, standards-compliant identity infrastructure software solution, built natively for .NET by industry leaders and pioneers in security standards, including OpenID Connect, OAuth 2.0, Backend for Frontend (BFF), and FAPI. We give developers deep extensibility by design—full control over the UI, business logic, and hosting—combined with the commercial and legal clarity and predictable pricing that enterprises in highly regulated industries demand, like financial services and healthcare. If you need to embed compliant, composable identity without sacrificing control or maturity, Duende is the proven secure identity standard. We bring the craft to identity, so you can focus on yours.

QSE Group offers innovative quantum-proof data protection services designed to secure your data from evolving cyber threats, including potential risks posed by quantum computing. Their decentralized, immutable cloud storage ensures that your data remains safe from ransomware and other attacks, while their proprietary encryption technology remains future-proof. The platform’s Entropy as a Service (EaaS) provides quantum-resilient randomness for encryption key generation, ensuring data security both now and in the future. By integrating seamlessly into your existing infrastructure, QSE offers a simple yet robust solution for businesses seeking long-term protection without the need for major overhauls. The system is built to scale, offering flexibility from small business needs to enterprise-level demands.

tenfold is an efficient, no-code Identity Governance & Administration (IGA) solution that simplifies the management of IT access and privileges. Designed for rapid deployment with its off-the-shelf plugins, tenfold helps organizations avoid long and costly setup processes, enabling full operational functionality in just weeks. The platform empowers businesses to manage user access with features like user lifecycle management, role-based access, and end-user self-service. It also includes essential tools for managing data access governance, user access reviews, and approval workflows. With tenfold, organizations can gain full control over IT privileges, mitigate access risks, and ensure the right people have secure access to the right resources at all times. The solution supports separation of duties to enhance security and compliance, allowing businesses to reduce risks while improving operational efficiency.