Laudspeaker
Acquired
What they do:
Open source mobile marketing platform. Alternative to appcues /…
Quick facts:
HQ: San Francisco, CA, United States
Top Developer Tools Startups in the United States
This list has 603 startups and was last updated on Oct 15, 2026. 157 of them are hiring right now. Biggest hubs: San Francisco (441), New York (75), and Los Angeles (20). Largest teams: GitLab, PagerDuty, and Algolia. Latest round: Supabase raised $150M (Oct 2, 2026).
603 startupsPage 15 of 17
Warrant
Acquired
What they do:
Authorization and access control as a service.
Quick facts:
HQ: Los Angeles, CA, United States
Payload
Acquired
What they do:
Developer-First Headless CMS and Application Framework
Quick facts:
HQ: Grand Rapids, MI, 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
Opsolutely
Acquired
What they do:
Automated deployments for software teams.
Quick facts:
HQ: San Francisco, CA, United States
Scaphold.io
Acquired
What they do:
The Universal API
Quick facts:
HQ: San Francisco, CA, United States
Escher Reality
Acquired
What they do:
The backend for Augmented Reality.
Quick facts:
HQ: San Francisco, CA, United States
OneGraph
Acquired
What they do:
GraphQL API to connect all of the internet's APIs. Join us at Netlify!
Quick facts:
HQ: San Francisco, CA, United States
Nestybox
Acquired
What they do:
Enables Linux containers to act as super fast & efficient VMs
Quick facts:
HQ: San Francisco, CA, United States
Arroyo
Acquired
What they do:
Cloud-native stream processing
Quick facts:
HQ: San Francisco, CA, United States
DAGWorks Inc.
Acquired
What they do:
Open source tools & services for reliable AI Agents & AI Applications
Quick facts:
HQ: San Francisco, CA, United States
Chatter
Acquired
What they do:
Dead simple LLM testing and iteration
Quick facts:
HQ: Philadelphia, PA, United States
OpenPipe
Acquired
What they do:
Turn expensive prompts into cheap fine-tuned models
Quick facts:
HQ: Seattle, WA, United States
Standard Treasury
Acquired
What they do:
Banking APIs; acquired by Silicon Valley Bank in August 2015
Quick facts:
HQ: San Francisco, CA, United States
YC S13Early stage
Redspread
Acquired
What they do:
Version control for software environments
Quick facts:
HQ: San Francisco, CA, United States
YC W16Early stage
Hunter2
Acquired
What they do:
Hunter2 trains engineering teams in application security through…
Quick facts:
HQ: Boston, MA, United States
YC W18Early stage
SimpleHash
Acquired
What they do:
Multi-chain token data platform
Quick facts:
HQ: San Francisco, CA, United States
YC W22Early stage
Continue
Acquired
What they do:
Pioneering open-source coding agent
Quick facts:
HQ: San Francisco, CA, United States
YC S23Early stage
FileStack
Shut down
What they do:
Acquired by Xenon Ventures.We enable website developers to hook into…
Quick facts:
HQ: San Antonio, TX, United States
Make School
Shut down
What they do:
Make School is redesigning college for the 21st century. Students…
Quick facts:
HQ: San Francisco, CA, United States
AXAR AI
Shut down
What they do:
Multi-agent orchestration platform
Quick facts:
HQ: San Francisco, CA, United States
Wingback
Shut down
What they do:
Wingback provides tools and APIs for SaaS pricing and packaging.
Quick facts:
HQ: San Francisco, CA, United States
Neptune.io
Shut down
What they do:
A self-healing platform to enrich and fix server alerts automatically
Quick facts:
HQ: San Francisco, CA, United States
Mystic
Shut down
What they do:
Low latency API to run and deploy ML models
Quick facts:
HQ: Austin, TX, United States
Standard Cyborg
Shut down
What they do:
Buid, test and deploy perception applications
Quick facts:
HQ: San Francisco, CA, United States
Streamdal
Shut down
What they do:
Data Quality & Playback Platform
Quick facts:
HQ: Portland, OR, United States
Dropbase
Shut down
What they do:
AI app builder for internal tools. Build back-office software faster…
Quick facts:
HQ: San Francisco, CA, United States
Squire.ai
Shut down
What they do:
Never code alone.
Quick facts:
HQ: San Francisco, CA, United States
Fuse
Shut down
What they do:
Unified API for financial data aggregators.
Quick facts:
HQ: New York, NY, United States
Ploomber
Shut down
What they do:
Heroku for AI
Quick facts:
HQ: New York, NY, United States
UtilityScore (formerly Pando)
Shut down
What they do:
API that estimates utility costs for 100M+ homes.
Quick facts:
HQ: San Francisco, CA, United States