
Mainstack enables entrepreneurs with commerce and global payment solutions to showcase and get paid for their work and services, grow revenue, and manage customers - all in one place.

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Simple, intentional software with no subscriptions, ever. Built for the self-directed practitioner to own, not rent.

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| Website | mainstack.com | codeandsea.com |
| Company | — | Startup from the United Kingdom · 2026 |
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Code and Sea (Ltd) is an independent UK software development studio focused on building simple, privacy-first, and value-driven digital products. Founded by a solo developer building in public, Code and Sea rejects software bloat, intrusive data tracking, and subscription rental fatigue in favour...
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