# Zcash Applications Lab: Open-Source Builder Initiative

**URL:** <https://forum.zcashcommunity.com/t/zcash-applications-lab-open-source-builder-initiative/55410>\
**Category:** Community Collaborations\
**Created:** [April 20, 2026, 12:21am UTC](https://forum.zcashcommunity.com/t/zcash-applications-lab-open-source-builder-initiative/55410 "2026-04-20T00:21:28Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Michae2xl](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/michae2xl/32/37337_2.png) [@Michae2xl](https://forum.zcashcommunity.com/u/Michae2xl)\
**Post date:** [April 20, 2026, 1:25am UTC](https://forum.zcashcommunity.com/t/zcash-applications-lab-open-source-builder-initiative/55410/2 "2026-04-20T01:25:52Z")

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Can that support decisions for the retroactive coinholder?

Test Flow:

Zcash Applications Lab sprints (1-3 months) \<\> ZCG (code products who gains traction can be submitted) \<\> in case it was reproved, there is a “second chance” 6 months, can try Retroactive Coinholder - Loop.

We can attract many developers, products, and ideas and run a year-round “hackathon-style” search for solutions based on Zcash, the protocol, ZK, collaborations, etc.

> [@Coinholder-Directed Retroactive Grants Program Q2 2026 - Now Accepting Proposals](https://forum.zcashcommunity.com/t/coinholder-directed-retroactive-grants-program-q2-2026-now-accepting-proposals/55328/5):
>
> This program provides retroactive funding exclusively for completed projects. To qualify for a grant, your work must be verifiable; if coinholders cannot confirm your project’s completion and impact, your proposal will not be funded. When submitting your retroactive request via GitHub, you must agree to the following: I understand that this program is only for fully completed work. Applications for planned or partially finished projects will not be considered. All work must be verified by its…

 ![Screenshot 2026-04-19 at 22.46.32](https://global.discourse-cdn.com/zcash/original/3X/f/1/f172d3c39298b4bb33a3f44cd727035bea93d1ca.jpeg)

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