- OpenMyau is free and open source. Opal is $8.99 for a finished client instead of a project.
- OpenMyau runs on MC 1.8.9. Opal runs on the current release, MC 26.2, as a Fabric mod.
- Opal ships 70 modules behind a custom glass UI engine, plus a built-in GraalJS scripting engine. OpenMyau's own listing does not publish a module count or UI description to weigh against that.
- Setup is launcher, login, play on Opal. OpenMyau means pulling the source and building it yourself, or grabbing it as the Myau extension bundled inside Opai.
- If free, open source, and MC 1.8.9 is genuinely what you want, OpenMyau is a legitimate, credible pick.
At a glance
| Feature | Opal | OpenMyau |
|---|---|---|
| Price | $8.99 | Free, open source |
| Source availability | Closed source | Open source |
| Minecraft version | MC 26.2 | MC 1.8.9 |
| Tuned for | BedWars / SkyWars-style minigame combat, plus a quieter set for most servers | Hypixel |
| Distribution | Launcher | Source, also shipped as Myau via Opai |
| Status | Active | Active |
Opal by the numbers
Free versus $8.99: what each price actually buys
OpenMyau costs nothing, and that is not a footnote, it is the point: it is open source, so you can read the code, build it yourself, and never touch a launcher or an account system you do not control. That is a real reason to run it, and it is exactly why it lives on today as the Myau extension inside Opai instead of needing its own storefront.
Opal costs $8.99. What that buys is a client someone else already finished for you: a launcher that logs you in, a custom glass UI engine instead of a raw settings screen, and 70 modules across combat, movement, visual, world, and utility that are already wired together instead of left for you to assemble. You are not paying for something OpenMyau's own listing claims to lack. You are paying to skip the build step.
Two very different Minecraft versions
OpenMyau targets MC 1.8.9, the version a lot of competitive Hypixel PvP still runs on, and that is not a knock. 1.8.9 combat is still the standard plenty of players want, and an open source client built specifically for it has an obvious, dedicated audience.
Opal runs on the current release, MC 26.2, as a Fabric mod on Java 25. If your server has already moved past 1.8.9, or you just want a client actively built against the newest client internals, Opal is the one that is actually on that version at all. These two are not really competing for the same install. They run on different Minecraft versions entirely.
What's actually documented, and what isn't
Opal's own listing is detailed down to the module: 70 of them, split across combat, movement, visual, world, and utility, plus an embedded GraalJS scripting runtime for writing your own scripts against the client, Discord Rich Presence, an in-client IRC channel, and a dynamic island HUD overlay.
OpenMyau's listing, by comparison, is thin: one line describing it as an open source Hypixel cheat client, plus the fact that it now ships as the Myau extension inside Opai. There is no published module count, feature list, or UI description to hold up next to Opal's. That is not automatically a mark against it, open source means anyone can go read the source directly instead of taking a listing's word for it. It does mean this comparison can only speak to what is actually documented, not to feature parity. Reading the source yourself is a genuinely good option. Whether you want to spend an evening doing it before your first game is a separate question.
Who each one is actually for
These serve different buyers more than they compete head to head. If you want free, want to read the code yourself, or you are already on MC 1.8.9 and happy there, OpenMyau is a legitimate, credible pick, and free and open source is a real edge Opal does not have. If you want a maintained client on the current Minecraft release with a finished UI and a broad module set the moment you log in, and $8.99 is not a barrier, Opal is built for that instead.
When OpenMyau is the better call
Be honest with yourself about what you actually want.
Pros
- You want it free and don't mind pulling the source and building it yourself
- You play specifically on MC 1.8.9 and want an open source client built for it
- You'd rather read or modify the code than take a listing's word for it
- You're fine running it as the Myau extension inside Opai instead of standalone
Cons
- No published module count, feature list, or UI to weigh before you commit
- Building it yourself is the setup, not an optional step
- MC 1.8.9 only, with no path to the current Minecraft release
- Source distribution only, no launcher of its own
If you want a client that is already finished, tuned, and on the current Minecraft release the moment you log in, and $8.99 is not a decision that keeps you up at night, that is Opal.
FAQ
Yes. It is open source with no listed price, and it is also distributed as the Myau extension inside Opai.
MC 1.8.9, per its own listing.
$8.99, once. Lifetime license, no subscription.
No. Opal targets the current release, MC 26.2, while OpenMyau targets MC 1.8.9. They do not overlap on version.
No. Opal is closed source and paid. OpenMyau is open source and free.
Lifetime license, instant delivery, no subscription
Disclaimer
Independent comparison. OpenMyau is a trademark of its owners; its use here is nominative and implies no affiliation or endorsement. Competitor details are accurate to the best of our knowledge as of 2026 and may contain errors.
