Klaus AI
Shut down
What they do:
Fast and Safe OpenClaw on the cloud
Quick facts:
HQ: San Francisco, CA, United States
Top B2B Software Startups in California
This list has 2,349 startups and was last updated on Oct 15, 2026. 592 of them are hiring right now. Biggest hubs: San Francisco (2,110), Los Angeles (79), and San Diego (12). Largest teams: Stripe, Deel, and GrubMarket. Latest round: Modal raised $750M (Oct 14, 2026).
2,349 startupsPage 65 of 66
Q2Q
Shut down
What they do:
We help private equity teams find acquisition targets faster
Quick facts:
HQ: San Francisco, CA, United States
Mendral
Shut down
What they do:
AI DevOps Engineer
Quick facts:
HQ: San Francisco, CA, United States
Oddpool
Shut down
What they do:
Institutional infrastructure for prediction markets
Quick facts:
HQ: San Francisco, CA, United States
GiveSpark
Shut down
What they do:
Givespark was a celebrity charity fundraising platform
Quick facts:
HQ: San Francisco, CA, United States
AppHarbor
Shut down
What they do:
.NET Cloud Platform as a Service
Quick facts:
HQ: San Francisco, CA, United States
MerryMint
Shut down
What they do:
Virtual activities for remote teams
Quick facts:
HQ: San Francisco, CA, United States
Traversal Networks
Shut down
What they do:
Enterprise Threat Detection: Tuning, Triage, and Analysis by Experts.
Quick facts:
HQ: San Francisco, CA, United States
UpLabs
Shut down
What they do:
UpLabs is the #1 marketplace for designers & developers to find…
Quick facts:
HQ: San Francisco, CA, United States
Mindori
Shut down
What they do:
Mindori builds white-label voice search for e-commerce apps.
Quick facts:
HQ: San Francisco, CA, United States
miru
Shut down
What they do:
Experience any piece of furniture in AR
Quick facts:
HQ: San Francisco, CA, United States
Comradery
Shut down
What they do:
White-label Bookface for companies and communities!
Quick facts:
HQ: San Francisco, CA, United States
Avalanche
Shut down
What they do:
Referral program SDK for startups
Quick facts:
HQ: San Francisco, CA, United States
Glisten AI
Shut down
What they do:
Glisten AI automatically categorizes and tags e-commerce product data.
Quick facts:
HQ: San Francisco, CA, United States
Scout
Shut down
What they do:
Dead simple CI/CD for ML teams
Quick facts:
HQ: San Francisco, CA, United States
Syncro
Shut down
What they do:
Intelligence layer for internal communications and culture
Quick facts:
HQ: San Francisco, CA, United States
Metamanagement
Shut down
What they do:
We help SaaS companies deploy into their customer's environment.
Quick facts:
HQ: San Francisco, CA, United States
Kindamagical
Shut down
What they do:
Create + share amazing product GIFs in minutes ⚡️
Quick facts:
HQ: San Francisco, CA, United States
Ruta Health
Shut down
What they do:
Async personalized and actionable health education by real doctors
Quick facts:
HQ: San Francisco, CA, United States
Ruleset
Shut down
What they do:
The SaaS Decision Engine for Lenders
Quick facts:
HQ: San Francisco, CA, United States
SensorSurf
Shut down
What they do:
Resolve PR check failures instantly with AI
Quick facts:
HQ: San Francisco, CA, United States
Celest
Shut down
What they do:
The Vercel of Flutter
Quick facts:
HQ: San Francisco, CA, United States
Pixelapse
Shut down
What they do:
Github for designers. We automatically keep track of revisions of…
Quick facts:
HQ: San Francisco, CA, United States
YC W12Early stage
Brace
Shut down
What they do:
Backlift allows front-end only developers to build entire websites…
Quick facts:
HQ: San Francisco, CA, United States
YC W12Early stage
Documents.Me
Shut down
What they do:
Client-side encryption for your devices and the cloud.
Quick facts:
HQ: San Francisco, CA, United States
YC W12Early stage
Proxino
Shut down
What they do:
Javascript proxy.
Quick facts:
HQ: San Francisco, CA, United States
YC S11Early stage
Gantto
Shut down
What they do:
Better Microsoft Project.
Quick facts:
HQ: San Francisco, CA, United States
YC S10Early stage
FathomDB
Shut down
What they do:
FathomDB offers databases as a service, taking care of many of the day-to-day tasks database administrators have to deal with and letting them focus on more…
Quick facts:
HQ: San Francisco, CA, United States
YC W08Early stage
Appcubator
Shut down
What they do:
The easiest way to prototype web applications.
Quick facts:
HQ: San Francisco, CA, United States
YC W13Early stage
Logiblock
Shut down
What they do:
Logiblock engineers electronics and development tools to dramatically…
Quick facts:
HQ: San Francisco, CA, United States
YC W13Early stage
WebCake
Shut down
What they do:
Marketing people modify site.
Quick facts:
HQ: San Francisco, CA, United States
YC S13Early stage
Yumbin
Shut down
What they do:
App replaces office vending.
Quick facts:
HQ: San Francisco, CA, United States
YC W14Early stage
Pearl
Shut down
What they do:
The future of office coffee. Keurig convenience meets cafe quality.
Quick facts:
HQ: San Francisco, CA, United States
YC W17Early stage
Haiku
Shut down
What they do:
Collaboration tools for software companies
Quick facts:
HQ: San Francisco, CA, United States
BlitzIQ
Shut down
What they do:
Note taking workspace for B2B sales teams
Quick facts:
HQ: San Francisco, CA, United States
YC W19Early stage
Openbase
Shut down
What they do:
Open-source library discovery
Quick facts:
HQ: San Francisco, CA, United States