Negative Epsilon
Negative Epsilon builds solid, reliable technical platforms for teams that need to grow without unnecessary complexity.
Festea
We are the team behind Festea, providing payments and festival web apps for live events.
- Festea Pay — payments for clubs, festivals and live events
- Festea Web Apps — web apps for festivals
Other work
We also help startups, studios, and NGOs build dependable software platforms to operate, scale, and make complex work easier.
- FiscalRail — an invoicing API for developers that handles tax calculations, numbering, immutable records, and professional PDFs.
- Sello — a Mac app for signing PDFs with your digital certificate, keeping your documents on your Mac.
- Chorematic — a fair household chore tracker that scores what gets done with points, built for roommates, couples, and shared homes.
- ISFG — a website and technology platform for the leading association in forensic genetics, serving thousands of members worldwide and powering research and casework tools.
- Estudio S2A — a website, portfolio, and project management platform for a boutique architecture studio in Huelva, Spain.
- GHEP-ISFG — a multilingual website and membership platform for a scientific NGO, supporting complex data collection for its yearly collaborative analysis exercise.
