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Become a sponsor to Mantas Vilčinskas

@mistermantas

Mantas Vilčinskas

mistermantas
Lithuania

Hi, I’m Mantas 👋

I’m a self-taught product designer and full-stack developer from Lithuania. I started learning by building things after school in 2016, and I still work the same way: follow a promising idea, make it tangible, and share it when other people might find it useful.

In 2025, I co-founded Uncascade, where I lead product and R&D. Much of the work begins with me designing, coding, and testing an idea. Uncascade gives the strongest projects a long-term home and the chance to grow with more people around them.

GitHub is my public workbench. I release open-source infrastructure, product experiments, small utilities, and the occasional thing I made because it seemed cool. Please use them, fork them, improve them, and tell me what they become.

What I’m building 💻

You can see the wider picture on Uncascade’s Products page.

What sponsorship makes possible 💛

Sponsorship gives me more time for the work that keeps public projects alive: maintenance, documentation, bug fixes, releases, and helping the people who use them. It also helps me turn promising experiments into repositories that others can run, study, and build on.

Subscribe to Uncascade on YouTube for build updates, demos, and new experiments.

I’m available for thoughtful collaborations and select project work. 🌈

Current sponsors 1

@Short-io
Past sponsors 3
@messutied
@alisalahio
Private Sponsor

Featured work

  1. cstate/cstate

    🔥 Open source static (serverless) status page. Uses hyperfast Go & Hugo, minimal HTML/CSS/JS, customizable, outstanding browser support (IE8+), preloaded CMS, read-only API, badges & more.

    HTML 2,894
  2. mistermantas/macos-sleep-switch

    Free macOS menu-bar app that keeps Codex, Claude Code, OpenCode, and other long-running work awake.

    Swift 2

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Select a tier

$ a month

You'll receive any rewards listed in the $15 monthly tier. Additionally, a Public Sponsor achievement will be added to your profile.

$5 a month

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Thank you for supporting the open-source projects and experiments I publish here. I’ll send you a personal thank-you by email.

This is a one-time reward. To claim it, email hi@mnts.lt after sponsoring and include your GitHub username.

$15 a month

Select

Thank you for supporting the open-source projects and experiments I publish here. I’ll send you a personal thank-you by email.

This is a one-time reward. To claim it, email hi@mnts.lt after sponsoring with your GitHub username and the name or handle you want mentioned.

$30 a month

Select

Choose one public repository that I maintain. I’ll add your name, company, or project to the supporters section at the bottom of its README.

This is a one-time reward. To claim it, email hi@mnts.lt with your GitHub username, chosen repository, display name, and link.

$50 a month

Select

Choose one public repository that I maintain. I’ll add your name, company, or project to the sponsor section at the bottom of its README and the top.

This is a one-time reward. To claim it, email hi@mnts.lt with your GitHub username, chosen repository, display name, and link.

$100 a month

Select

Choose one public repository that I maintain. I’ll feature your name, company, or project near the top and bottom of its README for the duration of this sponsorsihp.

I’ll also personally review at least one issue or feature proposal for each month of the whole support period.

This is a one-time reward. To claim it, email hi@mnts.lt with your GitHub username, chosen repository, display name, link, and any issue you want reviewed.