1
Gel
geldata.comAlso covers performance and python
Build applications on Gel, an open-source database with a data model, graph queries, authentication, and AI features.
Alternatives
The Best FastAPI Alternatives in 2026
10 alternatives0 free · 5 open source
Looking for something like FastAPI? Here are 10 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 5 are open source.
Build APIs with FastAPI, a Python framework described as easy to learn and ready for production.
Top picks at a glance
First suggestionGelBuild applications on Gel, an open-source database with a…Open source optionValdDistributed vector search is provided by Vald, an engine…Another optionTopKTopK combines retrieval, models, inference, and storage for…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Gel | — | Not stated | Web |
| 2 | TopK | — | Not stated | Web |
| 3 | Qdrant | — | Not stated | Web |
| 4 | Vald | — | Yes | — |
| 5 | VectorDB | — | Yes | — |
| 6 | Delta Lake | — | Yes | — |
| 7 | TextRazor | — | Not stated | Web |
| 8 | Resend | — | Not stated | Web |
| 9 | CatchTheTornado/text-extract-api | — | Yes | — |
| 10 | Posting | — | Yes | Linux, macOS, Windows |
All FastAPI alternatives
2
TopK
topk.ioAlso covers performance
TopK combines retrieval, models, inference, and storage for AI teams building search and retrieval systems.
3
Qdrant
qdrant.techAlso covers performance · same kind of online tool
Vector similarity search is provided by Qdrant, an open-source search engine written in Rust.
4
Also covers performance · open source
Distributed vector search is provided by Vald, an engine designed to scale across deployments.
5
Also covers python · open source
Vector search and storage are the focus of VectorDB, a Python vector database project.
6
Also covers python · open source
For lakehouse architectures, Delta Lake provides an open-source storage framework with support for engines including Spark, Trino, and Hive.
7
TextRazor
textrazor.comAlso covers python · same kind of online tool
TextRazor provides an NLP API that extracts entities and meaning from text.
8
Resend
resend.comAlso covers python
Resend provides email delivery infrastructure for transactional and marketing messages.
9
Also covers python · open source
This API extracts and parses text from PDF, Word, and PowerPoint files, with OCR models and options to anonymize documents and remove PII.
10
Also covers python · open source
Send HTTP requests from the terminal with Posting, an interactive client that can also run over SSH.
No alternatives match this filter.
Alternatives to similar tools
Delta Lake24 alternativesGel24 alternativesTopK5 alternativesVald24 alternativesVectorDB24 alternativesResend11 alternatives
TopicAPIs & Databases · 93 sites Best-of listBest Free API Testing Tools for Individual Developers ListingFastAPI details
What is the best alternative to FastAPI?
Based on features, tags and platforms, the closest alternatives to FastAPI are Gel, TopK, and Qdrant.
Are there open-source alternatives to FastAPI?
Yes: Vald, VectorDB, Delta Lake, and CatchTheTornado/text-extract-api.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative