PopSQL
Acquired
What they do:
SQL editor for teams
Quick facts:
HQ: San Francisco, CA, United States
Top Developer Tools Startups in California
This list has 465 startups and was last updated on Oct 15, 2026. 133 of them are hiring right now. Biggest hubs: San Francisco (441) and Los Angeles (20). Largest teams: GitLab, PagerDuty, and Algolia. Latest round: Supabase raised $150M (Oct 2, 2026).
465 startupsPage 11 of 13
Bun
Acquired
What they do:
Bun is an incredibly fast all-in-one JavaScript toolkit
Quick facts:
HQ: San Francisco, CA, United States
DeepSource
Acquired
What they do:
Unified DevSecOps platform, helping developers ship good code.
Quick facts:
HQ: San Francisco, CA, United States
Aquarium Learning
Acquired
What they do:
We help ML teams improve their models by improving their datasets
Quick facts:
HQ: San Francisco, CA, United States
Blaxel
Acquired
What they do:
The infrastructure for autonomous agents
Quick facts:
HQ: San Francisco, CA, United States
Zencoder
Acquired
What they do:
Video Encoding API, Open source video player (video.js)
Quick facts:
HQ: San Francisco, CA, United States
RethinkDB
Acquired
What they do:
The open source database for the realtime web.
Quick facts:
HQ: San Francisco, CA, United States
Kimono Labs
Acquired
What they do:
Create APIs where they don't exist. With kimono you can quickly…
Quick facts:
HQ: Los Angeles, CA, United States
Rickshaw
Acquired
What they do:
Same day local delivery, via API. Currently operating in SF.
Quick facts:
HQ: San Francisco, CA, United States
Wit.ai
Acquired
What they do:
Natural Language for Developers --Wit is an API that makes it easy…
Quick facts:
HQ: San Francisco, CA, United States
Emerge Tools
Acquired
What they do:
Supercharge your mobile apps
Quick facts:
HQ: Los Angeles, CA, United States
Cloudthread
Acquired
What they do:
Eliminate Cloud Waste. Attribute and Track Savings. Engage Engineers.
Quick facts:
HQ: San Francisco, CA, United States
mutable.ai
Acquired
What they do:
Artificially Intelligent Corporations
Quick facts:
HQ: San Francisco, CA, United States
Mocha
Acquired
What they do:
Build and publish web apps in minutes. No coding required.
Quick facts:
HQ: San Francisco, CA, United States
Trieve
Acquired
What they do:
All-in-one API for search, RAG, & recommendations
Quick facts:
HQ: San Francisco, CA, United States
Slapdash
Acquired
What they do:
Work at the speed of thought
Quick facts:
HQ: San Francisco, CA, United States
Hydra
Acquired
What they do:
Serverless Analytics on Postgres
Quick facts:
HQ: San Francisco, CA, United States
Taro
Acquired
What they do:
Help high-growth tech companies hire strong engineers
Quick facts:
HQ: San Francisco, CA, United States
EzDubs
Acquired
What they do:
Real-time speech translation
Quick facts:
HQ: San Francisco, CA, United States
Fig
Acquired
What they do:
Fig adds visual apps, shortcuts, and autocomplete to your terminal.
Quick facts:
HQ: San Francisco, CA, United States
Pyroscope
Acquired
What they do:
Open source continuous profiling software to debug performance issues
Quick facts:
HQ: San Francisco, CA, United States
Satsuma
Acquired
What they do:
Reliable blockchain indexing & querying for web3 engineering teams.
Quick facts:
HQ: San Francisco, CA, United States
Helicone
Acquired
What they do:
LLM Observability for Developers
Quick facts:
HQ: San Francisco, CA, United States
Cloudstitch
Acquired
What they do:
Power your website with Google Spreadsheets.Acquired by Instabase…
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HQ: San Francisco, CA, United States
FeaturePeek
Acquired
What they do:
Supercharged deployment previews for all.
Quick facts:
HQ: San Francisco, CA, United States
Okay
Acquired
What they do:
Dashboards and actionable insights for high-performing engineering…
Quick facts:
HQ: San Francisco, CA, United States
Instant
Acquired
What they do:
The best backend for AI-coded apps
Quick facts:
HQ: San Francisco, CA, United States
HyperDX
Acquired
What they do:
Open-source, dev-friendly observability.
Quick facts:
HQ: San Francisco, CA, United States
Laudspeaker
Acquired
What they do:
Open source mobile marketing platform. Alternative to appcues /…
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HQ: San Francisco, CA, United States
Warrant
Acquired
What they do:
Authorization and access control as a service.
Quick facts:
HQ: Los Angeles, CA, United States
Neosync
Acquired
What they do:
Neosync is an open-source anonymization and synthetic data platform.
Quick facts:
HQ: San Francisco, CA, United States
Vocode
Acquired
What they do:
Open source Voice AI
Quick facts:
HQ: San Francisco, CA, United States
TensorPool
Acquired
What they do:
Vercel For GPUs
Quick facts:
HQ: San Francisco, CA, United States
SlidePay
Acquired
What they do:
Banking and Payment Platform APIs. Exited October 2014.
Quick facts:
HQ: San Francisco, CA, United States
Clutch
Acquired
What they do:
An easy to integrate library for native iOS applications designed to…
Quick facts:
HQ: San Francisco, CA, United States
PipelineDB
Acquired
What they do:
Open-source time-series data analytics extension for PostgreSQL
Quick facts:
HQ: Los Angeles, CA, United States