Top Developer Tools Startups (2026)
We analyze six months of seed and pre-seed funding in developer tools startups, with major rounds from Namespace, Nullify, and Baz.
Published July 6, 2026 by Jacob Klionsky
- 01Hardware • Internet Services•California$23MSeed
Namespace, a compute platform designed for code, raised $23M in a combined Seed and Series A led by New Enterprise Associates (NEA) with participation from Susa Ventures and Burst Capital.
- 02Artificial Intelligence (AI) • Data and Analytics•New South Wales$12.5MSeed
AI product-security startup Nullify raised a $12.5 million seed round led by SYN Ventures with participation from Black Nova Venture Capital.
- 03Artificial Intelligence (AI) • Commerce and Shopping•Massachusetts$9MSeed
Agentic coding platform Baz raised $9 million in an extended seed round co-led by Battery Ventures and boldstart ventures with participation from AFG Partners and Disruptive VC
- 04Artificial Intelligence (AI) • Data and Analytics•California$8MSeed
Sazabi, the AI-native observability platform for fast-moving engineering teams, raised $8 million in a seed round led by J2 Ventures, Village Global, and Y Combinator, with participation from Orange Collective and over 60 angel investors.
- 05Artificial Intelligence (AI) • Data and Analytics•California$6.3MSeed
Manufact, an infrastructure platform for MCP-based AI agents, raised a $6.3 million seed round led by Peak XV with participation from Liquid 2 Ventures, Ritual Capital, Pioneer Fund, Y Combinator, and several angel investors.
- 06Artificial Intelligence (AI) • Data and Analytics•California$5.5MSeed
Crafting, a provider of end-to-end infrastructure for agentic engineering, raised a $5.5M seed round led by Mischief with participation from WndrCo and angel investors Andy Manoske, Arash Ferdowsi, Lenny Rachitsky, Gokul Rajaram, and Merrill Lutsky.
- 07Artificial Intelligence (AI) • Data and Analytics•California$5MSeed
Deeptrace, an AI SRE startup, raised $5M in a seed round.
- 08Artificial Intelligence (AI) • Data and Analytics•California$5MSeed
Respan, an AI observability platform focused on improving AI agent performance, raised $5 million in funding from Gradient, Y Combinator, Hat-Trick Capital, XIAOXIAO FUND, Antigravity Capital, Alpen Capital, and several prominent angels and AI founders.
- 09Apps • Information Technology•California$3MSeed
Modelence, an all-in-one infrastructure platform for AI-driven app development, raised a $3 million seed round led by Y Combinator with Rebel Fund, Acacia Venture Capital Partners, Formosa VC and Vocal Ventures participating.
- 10Artificial Intelligence (AI) • Data and Analytics•California$3MSeed
Laminar, an agent observability and debugging startup, raised a $3M seed round led by Atlantic.vc with participation from Y Combinator, AAL.vc, and angels including Ben Sigelman and Ant Wilson.
- 11Artificial Intelligence (AI) • Data and Analytics•California$3MSeed
Codeplain, an AI software specification and code generation platform, raised €2.6M in a seed round co-led by GapMinder and Silicon Gardens
- 12Apps • Artificial Intelligence (AI)•California$2.2MPre-Seed
Foundational context-layer startup Potpie AI raised a $2.2 million pre-seed round led by Emergent Ventures with All In Capital, DeVC, and Point One Capital participating.
- 13Artificial Intelligence (AI) • Data and Analytics•Lombardia$1.9MPre-Seed
AI-native internal tool startup Bricks.sh raised a €1.6 million pre-seed round led by Primo Capital with Octopus First Cheque Fund, Eden Ventures, Vesper Holding, Vento and several angels participating.
- 14Artificial Intelligence (AI) • Data and Analytics•Delaware$1.8MPre-Seed
GitHits, an AI startup, raised $1.75M in a pre-seed round led by Vendep Capital with participation from Trind Ventures, Peter Sarlin, Zach Shelby, Jerry Liu, Anand Arivukkarasu and Softlandia Ltd.
- 15Artificial Intelligence (AI) • Security•Nevada$0.3MPre-Seed
Autonomous penetration-testing startup Assail raised a $250K pre-seed round led by Squared Circle Ventures and secured $100K in AWS credits.
