# AI tools for “FastAPI” 50 matching tools; showing 24, ranked by relevance. Filters: `pricing=free` | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Why it matched | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [ModelScope](https://openaitools.app/tool/modelscope-community) | 3,085,423 | +5.1% | Free | Open-source model and dataset hub with one-click online demos | semantic match | [.md](https://openaitools.app/tool/modelscope-community.md) | | 2 | [Unsloth AI](https://openaitools.app/tool/unsloth-ai) | 887,457 | -17.6% | Free | Open-source, memory-efficient fine-tuning and local model running | semantic match | [.md](https://openaitools.app/tool/unsloth-ai.md) | | 3 | [LiteLLM](https://openaitools.app/tool/litellm) | 576,967 | +7.9% | Freemium, Contact for Pricing | One open-source AI gateway for 100+ LLM providers | semantic match | [.md](https://openaitools.app/tool/litellm.md) | | 4 | [Open WebUI](https://openaitools.app/tool/open-webui) | 804,534 | -2.8% | Freemium | Self-hosted AI workspace for local and cloud models | semantic match | [.md](https://openaitools.app/tool/open-webui.md) | | 5 | [fast.ai](https://openaitools.app/tool/fast-ai) | 250,720 | -10.4% | Free | Free practical deep learning courses, research and open-source libraries | semantic match | [.md](https://openaitools.app/tool/fast-ai.md) | | 6 | [Respan](https://openaitools.app/tool/respan) | 91,503 | -14.5% | Freemium | Open-source AI gateway with observability and evals built in | semantic match | [.md](https://openaitools.app/tool/respan.md) | | 7 | [LearnFast AI: Free AI Physics Solver](https://openaitools.app/tool/learnfast-ai-free-ai-physics-solver) | 88,085 | +9.7% | Free | Free, instant step-by-step math and physics solutions | semantic match | [.md](https://openaitools.app/tool/learnfast-ai-free-ai-physics-solver.md) | | 8 | [oMLX](https://openaitools.app/tool/omlx-ai) | 107,331 | -27.5% | Free | Native macOS inference server that makes local LLMs instant for coding agents | semantic match | [.md](https://openaitools.app/tool/omlx-ai.md) | | 9 | [Helicone](https://openaitools.app/tool/helicone-ai) | 57,187 | -25.2% | Freemium, Free Trial, Paid, Contact for Pricing, Free | Open-source LLM observability and AI gateway for shipping reliable AI apps | semantic match | [.md](https://openaitools.app/tool/helicone-ai.md) | | 10 | [Lemonade](https://openaitools.app/tool/lemonade-ai) | 96,232 | -34.4% | Free | Run local AI for text, images and speech on your own machine | semantic match | [.md](https://openaitools.app/tool/lemonade-ai.md) | | 11 | [Manifest](https://openaitools.app/tool/manifest) | 54,135 | -23% | Free | The open-source LLM gateway that fixes your agents' requests on the fly | semantic match | [.md](https://openaitools.app/tool/manifest.md) | | 12 | [HTTPie AI](https://openaitools.app/tool/httpie-ai) | 24,714 | -45.2% | Freemium | Human-friendly API client with an AI sidekick | semantic match | [.md](https://openaitools.app/tool/httpie-ai.md) | | 13 | [LocalMode UI - Local-First AI Components](https://openaitools.app/tool/localmode-ui-local-first-ai-components) | 33,428 | +54.7% | Free | Copy-owned React components and blocks that run AI models on-device, with no server and no API key. | semantic match | [.md](https://openaitools.app/tool/localmode-ui-local-first-ai-components.md) | | 14 | [Desert Ant Labs](https://openaitools.app/tool/desert-ant-labs) | 25,807 | -45.8% | Free (free up to 100k monthly active devices, unlimited inference) | Small on-device AI models with native SDKs and zero token costs | semantic match | [.md](https://openaitools.app/tool/desert-ant-labs.md) | | 15 | [Open SaaS](https://openaitools.app/tool/open-saas) | 8,996 | -44.8% | Free | Free, open-source React + Node.js SaaS starter kit | semantic match | [.md](https://openaitools.app/tool/open-saas.md) | | 16 | [EmbedAPI](https://openaitools.app/tool/get-any-link-metadata) | 1,240 | -19.3% | Freemium | One API key for every frontier AI model and 400 image styles | semantic match | [.md](https://openaitools.app/tool/get-any-link-metadata.md) | | 17 | [Quick Intel](https://openaitools.app/tool/quickintel-io) | 7,800 | +35.9% | Free | Token security APIs that stop bad trades before they happen | semantic match | [.md](https://openaitools.app/tool/quickintel-io.md) | | 18 | [PromptMage](https://openaitools.app/tool/promptmage) | 0 | 0% | Free | Self-hosted Python framework that gives LLM apps version-controlled prompts, testing, and an auto-generated API. | keywords 100%; semantic match | [.md](https://openaitools.app/tool/promptmage.md) | | 19 | [Cortex Labs](https://openaitools.app/tool/cortexlabs-ai) | 3,594 | +15.6% | Contact for Pricing, Free | Open-source blockchain where AI models run on-chain inside smart contracts | semantic match | [.md](https://openaitools.app/tool/cortexlabs-ai.md) | | 20 | [SoraWebui](https://openaitools.app/tool/sorawebui) | 1,194 | -49.5% | Free | Open-source text-to-video web UI for OpenAI's Sora model | semantic match | [.md](https://openaitools.app/tool/sorawebui.md) | | 21 | [PRST.ai](https://openaitools.app/tool/prst-ai) | 1,169 | -42.6% | Paid, Contact for Pricing, Free | Self-hosted, no-code prompt management for any AI model | semantic match | [.md](https://openaitools.app/tool/prst-ai.md) | | 22 | [What Should I Build Next?](https://openaitools.app/tool/what-should-i-build-next) | 909 | -41.3% | Free | Free AI-generated project specs you can actually ship this weekend | semantic match | [.md](https://openaitools.app/tool/what-should-i-build-next.md) | | 23 | [Rapid AI](https://openaitools.app/tool/rapid-ai) | 363 | -68.2% | Free | Open-source AI engineering that bridges research and real-world deployment | semantic match | [.md](https://openaitools.app/tool/rapid-ai.md) | | 24 | [OpenAI Text To Speech WebUI](https://openaitools.app/tool/openai-text-to-speech-webui) | 1,767 | +19.9% | Free | A free, no-frills web frontend for OpenAI's text-to-speech voices | semantic match | [.md](https://openaitools.app/tool/openai-text-to-speech-webui.md) | Page 1 of 3 · [Next page →](https://openaitools.app/index.md?q=FastAPI&pricing=free&page=2) For programmatic access use `https://openaitools.app/api/tools?q=…` or MCP `https://openaitools.app/api/mcp`. --- Source: https://openaitools.app/?q=FastAPI More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)