Zetema

For developers and students

Tech challenges, ready to pick up.

Real problems people have written down in open-source issue trackers, developer threads and the gaps in public data. Every one is sourced, has a brief and a builder's kit, and is sized so a first version fits a weekend, a few weeks or a semester.

“There is no royal road to geometry.”
Euclid · as reported by Proclus
Where Canada

  • Kit readyA weekend

    Web & mobile · Anywhere

    Small organizations can't see what their website costs a visitor on a slow or metered connection.

    Solved looks like

    A free page where someone enters a web address and sees total download size, the cost at a per-GB rate they enter, load time at 5, 10 and 50 Mbps, and the three biggest files to fix first. Totals match browser developer tools within 10% on 10 real sites.

    Proof2 sources · 4 quoted claims · almanac.httparchive.org, ised-isde.canada.ca · Jul 2026

    Market90% of households

    Kit5 steps · 22 tools · starter prompt ready

    1. Sourced (done)
    2. Kit (done)
    3. Wanted (next)
    4. Building
    5. Solved
    Open the kit →

    Be the first to want this solved. Nobody is building it yet.

  • Kit readyA few weeks

    Web & mobile · Anywhere

    Riders who spot a wrong bus or train time in an app have no easy way to tell whoever publishes the data.

    Solved looks like

    A small web service and form: given a Transitous trip id, it works out which feed the trip came from, returns the right contact (or says none is known) and a prefilled report. Tested on 20 trips from different feeds.

    Proof1 source · 3 quoted claims · github.com/public-transport · Oct 2026

    Market5 reactions on the issue

    Kit5 steps · 22 tools · starter prompt ready

    1. Sourced (done)
    2. Kit (done)
    3. Wanted (next)
    4. Building
    5. Solved
    Open the kit →

    Be the first to want this solved. Nobody is building it yet.

  • Kit readyA semester

    Web & mobile · Anywhere

    Android users can't easily back up their phone to a computer on their own Wi-Fi.

    Solved looks like

    A way for a phone to back up to a computer on the same Wi-Fi without a public certificate, for example a small desktop helper that serves WebDAV over HTTPS with a certificate the phone trusts after a one-time pairing. Shown working with a full backup and restore of at least 10 apps.

    Proof2 sources · 3 quoted claims · github.com/seedvault-app, news.ycombinator.com · Oct 2026

    Market7 reactions on the issue

    Kit5 steps · 21 tools · starter prompt ready

    1. Sourced (done)
    2. Kit (done)
    3. Wanted (next)
    4. Building
    5. Solved
    Open the kit →

    Be the first to want this solved. Nobody is building it yet.