All Rankings

Top 100 Developer Tools Startups in San Francisco 2026

The most-funded developer tools, DevOps and open-source startups headquartered in San Francisco, ranked by total capital raised.

Known total funding for 100 of 100 ranked companies: $35.3B.

Showing top 100 matching companies · Ranked by total funding raised

Use company data through the API.
Example request
curl "https://indexed.vc/api/v1/companies?industries=Developer+Tools,DevOps,Open+Source&countries=United+States&cities=San+Francisco&operatingStatus=active&sort=total_funding_raised&order=desc&limit=100" -H "X-API-Key: YOUR_API_KEY"

The API has no company type filter, so public companies can appear; this list counts private companies only.

The API cannot leave out companies whose latest round is a grant, private equity or debt financing; this list does.

Data from Indexed.vcUpdated

Methodology: up to 100 active companies matching this list's filters are ordered by disclosed total funding in USD. Companies whose latest round is one of: Grant, Private Equity, Debt Financing are excluded. Totals include recorded grants and other qualifying funding, not just equity. Open a company profile for its funding summary and available detail. How this data is built.

76
AssemblyAI

AssemblyAI delivers speech-to-text and voice agent APIs so developers can transcribe audio in rea...

San Francisco, United States51–200Artificial Intelligence, Developer Tools
Series CTotal funding$108.0MDec 2023
77
Olive

Build internal tools for your database with natural language.

San Francisco, United States1–10Artificial Intelligence, Developer Tools
Series CTotal funding$106.0MSep 2020
78
Clerk

Clerk builds complete user management for developers, solving authentication and account workflow...

San Francisco, United States11–50Infrastructure, Developer Tools
Series CTotal funding$105.2MJun 2025
79
Daily

Conversational Voice and Multimodal AI built with Open Source

San Francisco, United States51–200AI Assistant, Artificial Intelligence
Series BTotal funding$102.1MJan 2024
80
LambdaTest

TestMu AI provides an AI-native quality engineering cloud for teams testing web, mobile, and AI a...

San Francisco, United States201–500Artificial Intelligence, Developer Tools
Series DTotal funding$102.0MDec 2024
81
PlanetScale

PlanetScale offers fully managed cloud databases for Vitess and Postgres, delivering speed and re...

San Francisco, United States51–200Infrastructure, Databases
Series CTotal funding$102.0MNov 2021
82
Inworld AI

AI character engine for games and virtual worlds, enabling developers to create interactive NPCs ...

San Francisco, United States51–200Artificial Intelligence, Generative AI
Venture RoundTotal funding$100.0MJul 2026
83
LMArena

Crowdsourced AI evaluation platform from UC Berkeley researchers where millions of users test and...

San Francisco, United States11–50Artificial Intelligence, Developer Tools
SeedTotal funding$100.0MMay 2025
84
Twenty

Twenty lets teams compose their own CRM and internal apps with a single extensibility toolkit cov...

San Francisco, United States1–10CRM, Open Source
Series BTotal funding$100.0MJun 2026
85
Instabug

Instabug, now Luciq, provides agentic mobile observability that helps engineering teams detect is...

San Francisco, United States51–200Developer Tools, SaaS
Series BTotal funding$97.0MMay 2023
86
Firecrawl

API that searches, scrapes, and interacts with the web, turning live internet content into struct...

San Francisco, United States1–10Artificial Intelligence, Developer Tools
Series BTotal funding$91.2MSep 2026
87
Buf

Buf builds developer tools for Protocol Buffers and gRPC, offering an end-to-end platform for API...

San Francisco, United States11–50Developer Tools, SaaS
Series BTotal funding$88.7MJan 2023
88
Turbopuffer

Serverless vector search and full-text search engine built on object storage; 10x cheaper than al...

San Francisco, United States11–50Artificial Intelligence, Databases
Series BTotal funding$87.8MMay 2026
89
CodeSignal

Technical skills assessment and interview platform helping companies evaluate software engineerin...

San Francisco, United States201–500Developer Tools, HR Tech
Series CTotal funding$87.5MSep 2021
90
Convex

Reactive application backend platform optimized for AI-driven software development.

San Francisco, United States11–50Developer Tools, SaaS
Series BTotal funding$86.5MAug 2026
91
0x

Provides onchain swap infrastructure and APIs that let apps and wallets integrate token swaps, li...

San Francisco, United States51–200Crypto & Web3, Developer Tools
Series BTotal funding$85.0MApr 2022
92
DeepCogito

Deep Cogito is a San Francisco AI startup building open-source large language models toward gener...

San Francisco, United States1–10Artificial Intelligence, Developer Tools
Series ATotal funding$84.5MAug 2026
93
Coalesce

Data transformation and governance platform that unifies transformation, cataloging, and monitori...

San Francisco, United States51–200Developer Tools, SaaS
Series BTotal funding$81.9MApr 2024
94
Mechanical Orchard

Modernizes legacy mainframe applications for large enterprises using AI-enhanced, iterative code ...

San Francisco, United States51–200Developer Tools, SaaS
Series BTotal funding$81.0MAug 2024
95
Braintrust Data

Braintrust is an AI observability platform that helps teams evaluate, monitor, and improve AI pro...

San Francisco, United States51–200Artificial Intelligence, Developer Tools
Series BTotal funding$80.0MFeb 2026
96
Sail Research

Infrastructure platform for long-horizon AI agents combining efficient model serving with hosted ...

San Francisco, United States11–50Artificial Intelligence, Developer Tools
Series ATotal funding$80.0MJun 2026
97
Lob

Lob provides APIs and a print delivery network that let enterprises automate, personalize, and tr...

San Francisco, United States51–200Automation, Developer Tools
Series CTotal funding$79.4MFeb 2021
98
Fleet

Fleet Device Management is an open-core platform for managing Apple, Linux, Windows, Android, and...

San Francisco, United States51–200Developer Tools, SaaS
Series BTotal funding$77.0MJun 2025
99
Wabi AI

AI-powered personal software platform enabling anyone to create and share custom mini apps via na...

San Francisco, United States1–10Artificial Intelligence, Developer Tools
Venture RoundTotal funding$75.0MOct 2026
100
Merge

Merge integrates the software world. Merge envisions a future where all software is integrated to...

San Francisco, United States51–200Developer Tools, SaaS
Series BTotal funding$74.5MOct 2022