Y Combinator W20
YC Winter 2020 developer tools companies
Robotic Process Automation and Document Processing Platform
175 people · Austin, TX, USA · Developer Tools, Robotic Process Automation · YC page
The single platform to analyze, test, observe, and deploy new features
150 people · San Francisco, CA, USA · Developer Tools, Open Source · YC page
Cortex is the Internal Developer Portal eliminating “developer tax”…
100 people · San Francisco, CA, USA · Developer Tools, Productivity · YC page
Context layer for production-grade AI agents
90 people · San Francisco, CA, USA · Developer Tools, Open Source, Data Engineering, AI · YC page
Termii is an AI-native reliability infrastructure company.
63 people · Lagos, LA, Nigeria · Developer Tools, SMS · YC page
Run full stack apps close to your users.
48 people · Chicago, IL, USA · Infrastructure · YC page
The embedded integration platform for SaaS apps.
48 people · Los Angeles, CA, USA · Developer Tools · YC page
Connect, Unify, Respond to any data, anywhere with human-level…
41 people · San Francisco, CA, USA · Developer Tools, Machine Learning, Open Source, Enterprise Software · YC page
The API to get recordings, transcripts, and metadata from meetings
30 people · San Francisco, CA, USA · API, AI · YC page
Speed up non-coding tasks for engineering teams
27 people · London, England, United Kingdom · Developer Tools, Productivity · YC page
Environments as a service
26 people · Los Angeles, CA, USA · Developer Tools, Kubernetes · YC page
BuildBuddy provides enterprise features for Bazel — the open source…
15 people · San Francisco, CA, USA · Developer Tools · YC page
Manage the words across your team’s product from design to production.
14 people · San Francisco, CA, USA · Developer Tools, Design Tools · YC page
No-code business app builder
8 people · San Francisco, CA, USA · Developer Tools · YC page
Scalable validation infrastructure for AI agents
8 people · San Francisco, CA, USA · Developer Tools, Kubernetes · YC page
Open source agent generation framework
5 people · San Francisco, CA, USA · Developer Tools, Infrastructure, AI · YC page
Safer, faster dependency upgrades
5 people · New York City, NY, USA · Developer Tools, DevSecOps · YC page
Easy button to use data for your daily operations
2 people · San Francisco, CA, USA · Developer Tools, Data Engineering · YC page
Run machine learning models in the cloud
36 people · San Francisco, CA, USA · Developer Tools, Machine Learning, Community, Open Source · YC page
Data observability for modern data teams
32 people · New York City, NY, USA · Developer Tools, Data Engineering · YC page
Unified DevSecOps platform, helping developers ship good code.
12 people · San Francisco, CA, USA · Developer Tools, AI, AI Assistant · YC page
Weav is the universal API for commerce platforms
9 people · New York City, NY, USA · Payments, API · YC page
Dashboards and actionable insights for high-performing engineering…
4 people · San Francisco, CA, USA · Analytics, DevOps · YC page
The developer experience platform
3 people · Austin, TX, USA · Developer Tools · YC page
Datree prevents Kubernetes misconfigurations from reaching production
16 people · Tel Aviv-Yafo, Tel Aviv District, Israel · Developer Tools · YC page
AI app builder for internal tools. Build back-office software faster…
8 people · San Francisco, CA, USA · Developer Tools, AI · YC page
We generate synthetic data for computer vision models.
7 people · San Francisco, CA, USA · Machine Learning, Data Engineering, AI · YC page
Design and send messages from your app with a simple API.
5 people · Birmingham, AL, USA · Developer Tools, Messaging, Analytics · YC page
Pashi builds software to operate and optimize production lines.
3 people · San Francisco, CA, USA · Developer Tools, Robotics, Manufacturing · YC page
Dead simple CI/CD for ML teams
1 person · San Francisco, CA, USA · Machine Learning, DevOps · YC page
Model and visualize codebase architecture
Developer Tools · YC page
FAQ
How many developer tools companies are in YC Winter 2020 (W20)?+
31 launched companies in YC Winter 2020 carry a developer-tools or infrastructure tag in YC's directory (snapshot of 2026-10-20); 18 are active. Companies that have not launched publicly on YC's site yet are not counted.
What are the top tags in YC W20 dev tools?+
Developer Tools (25), AI (8), Data Engineering (4), Machine Learning (4), Open Source (4). 4 of 31 are tagged open source.
Which YC W20 dev-tool companies are the largest?+
By team size on YC's directory: ElectroNeek, PostHog, Cortex.
← Summer 2020Summer 2019 →All YC dev-tool companiesOpen-source YC companies
Source: Y Combinator's public company directory via the unofficial mirror yc-oss/api. DevHunt is not affiliated with Y Combinator.