TextCortex alternatives: 4 free & open-source picks
Curated, verified, and actually free. No trials, no crippled tiers. Star counts and last-activity dates checked by hand, not scraped and forgotten.
A local-first AI workspace with saved agents, files, memory, and reusable context; the model is yours, so the brand voice can be too.
licenseMIT
runsyour machine or their cloud
installDesktop installer for macOS/Windows/Linux, or Docker for a self-hosted web instance
enginesLocal llama.cpp models plus Ollama, LM Studio, LocalAI and many cloud APIs including OpenAI, Anthropic, Gemini, Bedrock, Azure, OpenRouter and Mistral
dataDesktop data stays in the app's local storage; self-hosted data is stored in the mounted server storage and chosen vector database (LanceDB by default), while prompts sent to cloud models leave the machine
the catch vs TextCortexIt can combine knowledge and personas, but it lacks TextCortex's polished browser-wide assistance, managed collaboration, and ready-made writing workflows.
setupThe installer is easy, but useful results still require downloading a local model or supplying a model-provider API key
facts verified 2026-08-14
A browser sidebar that reads the page, rewrites the selection, and saves custom actions; your local model does the thinking.
licenseMIT
runson your machine
installInstall the extension from the Chrome, Edge or Firefox add-on store
enginesOllama, Chrome AI (Gemini Nano) and OpenAI-compatible local endpoints such as LM Studio or llamafile
dataChats, settings and other extension data are stored in the browser's local storage; only the optional share feature contacts the project's server
the catch vs TextCortexIt is browser-native and private, but its local-model setup and narrower knowledge management are rougher than TextCortex's managed experience.
setupThe extension installs cleanly, but it still needs a running local model endpoint and browser-to-localhost connectivity
facts verified 2026-08-14
System-wide selected-text commands, reusable experts, a scratchpad, and document context; bring the model and skip the subscription.
licenseAGPL-3.0
runson your machine
installDownload a desktop binary from GitHub Releases; macOS also supports `brew install --cask witsy`
enginesOpenAI, Anthropic, Gemini, xAI, Meta, Ollama, LM Studio, Mistral, DeepSeek, OpenRouter, Groq, Cerebras, Azure and OpenAI-compatible endpoints, plus optional image, video, speech, search and MCP providers
dataConversation history, experts, settings and document repositories live in the local application profile; local files are indexed locally, while prompts and retrieved context sent to a cloud model leave the machine
the catch vs TextCortexIts experts and document repositories are flexible, but it lacks TextCortex's integrated browser knowledge bases, collaboration, and turnkey onboarding.
setupIt is BYOK unless you install Ollama and a local model; system-wide commands also need OS accessibility permissions
facts verified 2026-08-14
A self-hosted AI workbench with saved prompts, knowledge, web search, and multi-model comparison; powerful, not especially house-trained.
licenseOpen WebUI
runsyour server
installRun the official Docker image, install the Python package, or deploy with Kubernetes
enginesOllama and any OpenAI-compatible API, including LM Studio, vLLM, Groq, Mistral and OpenRouter; additional speech, image and search providers
dataBy default, chats and account data live in a local SQLite webui.db, uploads in a data/uploads directory and embeddings in the configured vector store; PostgreSQL and object storage are optional
the catch vs TextCortexIt offers knowledge and prompts, but not TextCortex's frictionless browser integration, managed personas, and team-ready knowledge workflow.
setupA non-expert must install Docker or a compatible Python environment, mount persistent storage correctly, and separately provide Ollama or an API endpoint
facts verified 2026-08-14
last updated 2026-08-14 · no votes, no pay-to-list · just what's real
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| AnythingLLM | MIT | one-click install | web, macos, windows, linux, self-hosted | 64,416 | 2026-08 |
| Page Assist | MIT | one-click install | android, browser-extension | 8,100 | 2026-08 |
| Witsy | AGPL-3.0 | one-click install | macos, windows, linux | 2,000 | 2026-04 |
| Open WebUI | Open WebUI | docker to self-host | web, self-hosted | — | — |
TextCortex: Customers pay for tuned workflows, predictable quality, governance, and a product team absorbing model churn rather than for the text box alone.
Is there a free alternative to TextCortex?
Yes: AnythingLLM, Page Assist, Witsy and 1 more. Every tool on this page is either open source or genuinely free to use long-term: no trials, no crippled tiers.
Should I just build my own TextCortex?
Our verdict is SÍ. TextCortex's solo core is compact: build a private AI writing workspace workspace that sends user text to one chosen model, stores versions, applies reusable instructions, and exports Markdown. A competent builder can reach a useful personal version in one sitting, while the paid product mainly wins on model, data, workflow. If you'd rather build, the exact one-shot prompt is free at puedovibecodearlo.app/textcortex.
