| SU-0223 | Interdisciplinary team founding a social-impact and networking startup seeks a co-founderOpen rol · Aschaffenburg, Duitsland | Maatschappelijke impact · Idee | — | — | okt 2026 | Nieuw |
| SU-0417 | AI training and evaluation project with working technology seeks a trustworthy co-founderOpen rol · Japan | AI · Prototype | — | — | okt 2026 | Nieuw |
| SU-0365 | Privacy-focused, provider-agnostic AI email assistant on MCP; solo founder offers 50/50 equity to a co-founderOpen rol · London, Verenigd Koninkrijk | AI, SaaS en B2B-software · Live product of bèta | Alleen equity | — | sep 2026 | Nieuw |
| SU-0364 | Managed cloud for running coding agents (Claude Code, Codex) via API; founder seeks a cofounder in SF or NYOpen rol · San Francisco or New York, Verenigde Staten | Developer tools, AI · Live product of bèta | — | — | sep 2026 | Nieuw |
| SU-0363 | Piston-less V8 engine architecture concept seeks a co-founderOpen rol · Locatie niet vermeld | Mobiliteit en logistiek, Deep tech · Idee | — | — | aug 2026 | Recent |
| SU-0362 | Legal-tech startup looking for a co-founderOpen rol · Locatie niet vermeld | Juridisch en publieke sector | — | — | aug 2026 | Recent |
| SU-0360 | Show HN post seeking a co-founder, engineer or video editor in San FranciscoOpen rol · San Francisco | — | — | — | aug 2026 | Recent |
| SU-0358 | Operator of a five-year-old local business with a scaling system seeks a co-founderOpen rol · Locatie niet vermeld | — | — | — | jul 2026 | Recent |
| SU-0356 | Deterministic natural-language runtime without LLMs, seven years solo, seeks co-founder or small angelOpen rol · Locatie niet vermeld | AI, Developer tools · Prototype | — | — | mei 2026 | Recent |
| SU-0411 | Founder with positive-impact ideas looks for a complementary co-founderOpen rol · Munich, Duitsland | Maatschappelijke impact · Idee | — | — | mei 2026 | Recent |
| SU-0355 | Platform for structured natural-language DSLs linking non-technical users, LLMs and deterministic logicOpen rol · Locatie niet vermeld | Developer tools, AI · Prototype | — | — | mrt 2026 | Recent |
| SU-0354 | Platform for sharing and collaborating on ML and bio research, like Hugging Face for academic researchOpen rol · Locatie niet vermeld | AI, Biotech en life sciences | — | Remote | mrt 2026 | Recent |
| SU-0352 | Vibecoding platform recruiting a co-founderOpen rol · Locatie niet vermeld | Developer tools, AI | — | — | okt 2025 | Ouder |
| SU-0351 | First apps marketplace for consumer robots seeks a co-founderOpen rol · Locatie niet vermeld | Hardware, robotica en IoT, Marktplaatsen | — | — | sep 2025 | Ouder |
| SU-0350 | Fintech platform unifying global markets with terminal-grade analytics and AI seeks a co-founderOpen rol · Locatie niet vermeld | Fintech, AI | — | — | aug 2025 | Ouder |
| SU-0349 | Reusable orbital spacecraft that retrieves payloads and returns them to Earth, seeks partnersOpen rol · Locatie niet vermeld | Deep tech · Idee | — | — | aug 2025 | Ouder |
| SU-0348 | YouTube learning tool with AI insights, learning paths and token rewardsOpen rol · Locatie niet vermeld | Onderwijs, Consumenten en sociaal, AI · Live product of bèta | — | — | jun 2025 | Ouder |
| SU-0347 | Weekend-built tool for a niche problem in the blue-collar industry, three users so farOpen rol · Locatie niet vermeld | Live product of bèta | — | — | jun 2025 | Ouder |
| SU-0380 | Computer-use tool for legacy software without APIs, spun out of a company builder, seeks co-foundersOpen rol · Munich, Duitsland | AI, Developer tools | Fulltime | — | apr 2025 | Ouder |
| SU-0346 | LAN gaming app for safer and faster multiplayer connectionsOpen rol · Locatie niet vermeld | Gaming | — | — | feb 2025 | Ouder |
| SU-0345 | Job board that vets employers for legitimacy and charges candidates for accessOpen rol · Locatie niet vermeld | HR en toekomst van werk, Consumenten en sociaal · Idee | — | — | okt 2024 | Ouder |
| SU-0338 | Scheme and GPT tooling projects (autograd, code completion, assembly-to-source) seek co-foundersOpen rol · Locatie niet vermeld | AI, Developer tools | — | — | jan 2024 | Ouder |
| SU-0337 | Low-cost fiber ISP with per-home switching, veteran ISP founder seeks a co-founderOpen rol · Locatie niet vermeld | Consumenten en sociaal · Idee | — | — | jan 2024 | Ouder |
| SU-0336 | Search engine for saved bookmarks across social platforms seeks co-founders in MumbaiOpen rol · Mumbai, India | Consumenten en sociaal | — | — | jan 2024 | Ouder |
| SU-0335 | Writing company focused on horror novels seeks a co-founderOpen rol · Locatie niet vermeld | Media en creators | — | — | jan 2024 | Ouder |
| SU-0334 | Low-cost hybrid tower and fiber consumer ISP, founder seeks a partnerOpen rol · Locatie niet vermeld | Consumenten en sociaal · Idee | — | — | jan 2024 | Ouder |
| SU-0513 | Open-source middleware for measuring whether AI acts honestly on a user's behalf seeks a co-founder and grant fundingOpen rol · Locatie niet vermeld | AI, Cybersecurity · Prototype | — | — | — | Zonder datum |
| SU-0510 | Hackathon-born tool that turns screen-share demos into AI-tutored skills seeks co-foundersOpen rol · Locatie niet vermeld | Onderwijs, AI · Prototype | — | — | — | Zonder datum |
| SU-0421 | Phone-native blockchain built in Termux seeks a co-founderOpen rol · Locatie niet vermeld | Crypto en web3 | — | — | — | Zonder datum |
| SU-0418 | Early cyber-risk quantification platform seeks a co-founder to build the company from the ground upOpen rol · Locatie niet vermeld | Cybersecurity, SaaS en B2B-software · Prototype | — | — | — | Zonder datum |
| SU-0412 | AI API marketplace with a buy/sell margin model seeks co-foundersOpen rol · Locatie niet vermeld | AI, Marktplaatsen | — | — | — | Zonder datum |