31 Seed-stage Developer Tools startups
31 Seed-stage Developer Tools startups with 63 founders and decision-makers, led by United States. 43 verified founder emails. Updated 2026-10-03.
Key findings
- FindMeMail tracks 31 Seed-stage Developer Tools startups, with 63 founders and decision-makers listed.
- United States is the top country, with 30 of them (97%), followed by Estonia (1).
- The most common team size is 1-10 employees (90% of companies).
- 3 (10%) were founded in the last three years.
- 21 companies (68%) have at least one verified founder email, 43 verified emails in total.
Breakdown
Top countries
- United States: 30 (97%)
- Estonia: 1 (3%)
Team size (employees)
- 1-10: 28 (90%)
- 11-50: 3 (10%)
Founded (last 10 years)
- 2017: 2 (6%)
- 2018: 1 (3%)
- 2019: 4 (13%)
- 2020: 3 (10%)
- 2021: 3 (10%)
- 2022: 3 (10%)
- 2023: 1 (3%)
- 2024: 2 (6%)
- 2025: 1 (3%)
Recently added Seed-stage Developer Tools startups
- Nubis — Middletown, United States: Nubis transforms businesses with tailored cloud solutions, offering expertise in architecture, DevOps, and migration for scalable success.
- Monosnap — Newark, United States: Monosnap offers secure screenshot and screencast management, SSO integration, direct cloud storage uploads, and OCR for data safety.
- Websim — San Francisco, United States: Websim is an AI-driven platform that instantly simulates interactive websites and web apps from simple URLs.
- Better Auth — San Francisco, United States: Better Auth provides tools for developers to simplify how developers manage user authentication.
- Livo Corporation dba PlugNMobile in CA — Walnut Creek, United States: Mobile Application Development & Management Platform (SaaS,Private Cloud,On Premise)
- RepreZen — Dobbs Ferry, United States: Innovative API design tools that promote interoperability and optimize integration ROI.
- Appbase.io — St Louis, United States: Appbase is an API for consuming JSON data streams with ElasticSearch.
- Joule — Miami, United States: A simple + user-friendly way to get your website and design tasks done quickly + easily.
- Metaviz — Venice, United States: Using AI to Improve Human Computer Interactions
- Hex Five Security — Redwood City, United States: Hex Five is the creator of MultiZone® Security, the quick and safe way to build high-grade security firmware for embedded systems.
- err0.io — San Francisco, United States: SaaS - Error and Log Management
- Airtrain AI — San Francisco, United States: Airtrain AI is an AI data platform that specializes in data curation, fine-tuning, and evaluation for LLMs.
- Ardis AI — Columbus, United States: Ardis AI develops a toolkit that extracts structured information from raw text.
- koodos — New York, United States: Building & enabling agentic cultural products
- Airnest — State College, United States: Airnest designs and develops flight planning and data capture software for the commercial drone industry.
- Webiny — San Francisco, United States: Open-Source Serverless CMS for Enterprises
- Operator — New York, United States: Operator is a data platform that help developers to access data from the decentralized web.
- Rubbrband — San Francisco, United States: Rubbrband provides AI Image generation with maximum control
- Dopt — Oakland, United States: Dopt provides software tools that help businesses build, manage, and automate customer-facing product experiences.
- Esprezzo — Boston, United States: No-code automation platform for crypto and blockchain
- Friday.app — South Portland, United States: Friday.app builds email and slack-based team communication tools to reduce meeting time.
- ar.io — Westwood, United States: ar.io is a global network, protocol, and currency that enables the permaweb.
- Reflect — Philadelphia, United States: Reflect is an automated web testing tool for developers to test their web app without writing a line of code.
- Simli — San Francisco, United States: We build APIs to bring digital humans to life
- Digma — Sunnyvale, United States: Digma is an observability platform that continuously tracks down performance problems in the code, and provides their root cause.
- Nitric — Boulder, United States: Tools to accelerate cloud development and deployment
- Codiga — Denver, United States: Help developers write better code, faster
- Crave.io — Santa Clara, United States: Build Faster, Scale Better: Run Crave Run
- Haiku — San Francisco, United States: Haiku creates collaboration tools for creators of software: designers, developers, and teams.
- Bugsee — San Jose, United States: Bugsee is a mobile software kit that adds information to computer crash reports.
Browse and filter all 31 companies
Frequently asked questions
How many Seed-stage Developer Tools startups are there?
FindMeMail currently lists 31 Seed-stage Developer Tools startups with at least one founder or decision-maker identified. The count updates daily as new companies are added.
Where are most Seed-stage Developer Tools startups based?
United States (30), Estonia (1).
How do I contact founders of Seed-stage Developer Tools startups?
43 verified founder emails are available for these companies on FindMeMail. Create a free account to get 50 free reveals, then buy one-time credit packs from $12.
Related reports
- Seed-stage startups in United States (1,905)
- Seed-stage Software startups (453)
- Seed-stage Health Care startups (202)
- Developer Tools companies in United States (202)
- Seed-stage Information Technology startups (200)
- Seed-stage Artificial Intelligence (AI) startups (176)
- Seed-stage SaaS startups (145)
- Seed-stage Internet startups (136)
- Seed-stage E-Commerce startups (133)
- Seed-stage Food and Beverage startups (103)
- Seed-stage Financial Services startups (93)
- Seed-stage Apps startups (80)
Methodology: counts include companies in the FindMeMail database with at least one identified founder or decision-maker. Data refreshes automatically as new companies are added.