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Modder

suborb

Builds mods for ZX Spectrum owners.

suborb on GitHub

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In short

Their mod has 1.2K stars on GitHub.

Built

z88dkWrite C programs for classic home computers

Open software for closed hardware.

3,722

mods for 4,106 devices

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co.build lists third-party projects and provides its own descriptions and setup prompts. Review instructions before running them: device changes can cause damage, data loss or security problems. Independent repair does not automatically remove statutory warranty rights, but damage caused by a modification may be excluded where law permits. Check the project, permissions and local law. Device names and logos belong to their owners; a listing does not imply their endorsement.

© 2026 Just Cobuild, Co.

Devices Mods Requests Defend Submit

Modder

suborb

Builds mods for ZX Spectrum owners.

suborb on GitHub

Is this you? Sign in with GitHub

In short

Their mod has 1.2K stars on GitHub.

Built

z88dkWrite C programs for classic home computers