Best On-Premises AI Writing Software of 2025

ONLYOFFICE Docs is a secure online office suite for teams and businesses of all sizes. Create and edit docs, sheets, slides, fillable forms and PDFs. Collaborate with your teammates in real time using two co-editing modes, version history and other tools. Enable the AI assistant of your choice — ChatGPT, DeepSeek, Mistral, Groq AI, etc. Generate new content, summarize, translate and do more with your favourite AI tool while working on office files. Integrate ONLYOFFICE Docs into your business platform, whether it be Odoo, Alfresco, Confluence, Pipedrive, Nextcloud, Redmine, SuiteCRM, etc., via an integration app (40+ available integrations). Use Docs within ONLYOFFICE DocSpace, a room-based document collaboration platform equipped with the online office suite. Create dedicated spaces for different purposes, invite your teammates, assign access permissions and collaborate the way you like. With DocSpace, you can store, share and co-edit office files, and even interact with third parties.

ProWritingAid helps companies produce better content, comms and reports, bids, and other documents faster. ProWritingAid eliminates common errors such as inconsistent terminology, context spelling errors, grammar mistakes, and poor style. There are many integration options available, including API and on site solutions. This supports all sizes of organizations, even those with privacy and security requirements.

Eskritor is an innovative AI-driven content creation tool that enables users to effortlessly produce a variety of written materials, including blog articles and product descriptions, with a simple click. This platform is particularly beneficial for students, allowing them to efficiently complete their assignments by generating coherent sentences, summaries, or even full paragraphs in a fraction of the time. With its versatile AI technology, Eskritor can craft numerous content types like engaging social media posts, compelling landing page text, and informative blog entries, thereby alleviating the workload of marketing teams. Additionally, Eskritor serves e-commerce professionals by assisting them in writing persuasive marketing copy and detailed product descriptions, capable of producing tailored content for any niche, subject, or industry across the board. By utilizing this tool, businesses can enhance their online presence and streamline their content creation processes.

WRITER is the end-to-end platform for building, activating, and supervising AI agents across the enterprise. It empowers IT and business teams to collaboratively automate work, improve decision making, and scale impact — with full control and governance. Unlike other solutions built exclusively for engineers or business users, the WRITER platform gives anyone the tools to build powerful AI agents. Users can easily connect agents to customer data and systems, map business processes to guide agent behavior, and create and test prompts. They can get started quickly with a library of over 100 prebuilt agents, or build their own using intuitive no-code and pro-code tools. When code is needed, developers can create tools, APIs, and integrations with ease — then make them available to agents through a simple drag-and-drop interface.

AI assistant for customer-facing departments. Sapling works with messaging platforms and CRMs to assist agents in creating personalized responses. Managers can gain conversational insights that will help them coach and prepare their teams. Sapling offers functionality for autocomplete, spelling, grammar checking, as well as snippets/canned message/text expander. All services can be hosted on-premise or in the cloud to meet security and privacy requirements. The Grammar and Spelling APIs allow Sapling's language models to be integrated into custom applications and use-cases. Sapling Suggest pulls relevant answers from a team knowledge database and allows agents to respond faster to customer inquiries by clicking on the desired response. Instead of giving brittle, decision tree-based chatbots, empower agents.

Boost your response rates by a staggering 8X through the use of personalized emails and LinkedIn messages generated by AI. By analyzing prospects' LinkedIn interactions, you can craft tailored messages that effectively encourage engagement. Enhance your cold outreach strategies with the integration of AI and automated workflows, significantly cutting down your research time per lead from 45 minutes to a mere 15 seconds while allowing AI to compose your emails. Easily create engaging sales, marketing, or HR emails with a personal touch in just a few clicks. By sending personalized LinkedIn connection requests and messages that are informed by a prospect's activities alongside AI suggestions, you can further elevate your response rates. Leverage AI-driven sales personalization to increase your cold outreach responses by 8X, utilizing customized LinkedIn messages that draw from the details in prospects' bios. Additionally, make the most of blog content to develop hyper-personalized backlink requests and automate your email outreach process. With AI-powered personalized communication, you can effortlessly generate emails that reflect the digital presence of your prospects, making your outreach efforts more effective than ever. Embrace this innovative approach to transform how you connect with potential clients and enhance your overall engagement strategy.

TextGears provides translation, paraphrasing and text checking services for hundreds companies around the globe. Free demo available online. API allows to integrate TextGears text analysis into any modern software product. On-premise installation will be the best options for those companies that cannot use any services our of the corporate network. Supported languages include: English, French, German, Portuguese, Russian, Italian, Arabic, Spanish, Japanese, Chinese and Greek.

ChatLabs is a platform that combines the best AI models into a single, streamlined experience. We have everything from chatting to writing and web search to generating amazing art. You can select the best AI for each task if you use GPT-4, Claude Opus Gemini or Llama 3 AI Assistants & Bots Customizable AI assistants unlock limitless possibilities. Choose from our pre-built options, or create your own by customizing them to your specific files. Your imagination is the only limit. Our AI Prompt Library allows you to organize frequently used prompts in a way that makes it easy for you to access them quickly. AI Art & Image Creativity: Create stunning visuals with our advanced AI tools, like FLUX.1, DALL.E 3, and Stable Diffusion 3 The possibilities are endless, whether it's for personal use or professional.

Would you like to edit text without switching between multiple applications? Our text editor offers everything you need for a smooth workflow, from syntax highlighting and word compatibility to Figma integration.

Harness the capabilities of tailored models to gain a strategic edge in your market. With our advanced enterprise Gen AI framework, you can surpass conventional limits and delegate repetitive tasks to robust assistants in real time – the possibilities are endless. For businesses that prioritize data protection, customize and implement generative AI solutions within your own secure cloud environment, ensuring safety and confidentiality at every step.