Portstack
Ephemeral preview environments for every pull request.
The company
- Founded
- 2020
- First check
- Seed
- Headquarters
- Lisbon, Portugal
- Sector
- Developer Tools
- Partnered since
- 2021
Reviewing a pull request by reading a diff is guesswork. Portstack gives every pull request a complete, running copy of the application — database, services, seeded data — at a URL anyone on the team can open.
Environments spin up in under forty seconds and disappear when the branch merges, which is what makes the economics work at scale.
Product managers, designers and support staff now review changes before they merge, and the teams using Portstack report a material drop in defects reaching production.
Why we invested
Miguel and Sara were running a consultancy and built this for themselves because nothing on the market was fast enough. When a team builds an internal tool that their clients start asking to buy, that is the strongest demand signal in software.
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Halyard
Deployment infrastructure for regulated engineering teams.
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Axiomatic
Evaluation and observability for production language models.
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Tessellate
Synthetic data generation for computer vision teams.