Launcher VS Launcher

Now I did find something from a quick google search. I've never used it though so trust in your will. https://github.com/SKCraft/Launcher Now, however, I would like to preface that you may have to deal with allowing your launcher to be supported through Microsoft as I read elsewhere about the PolyMC launcher having their MSA client ID rejected when they had drama (although this is different it may be something you have to get) but I am not an expert regarding the subject so I cannot confirm.

The list of modpacks could not be downloaded · Issue #505 · SKCraft/Launcher (github.com)

This has all been done before with stuff like SKCraft Launcher, packwiz, good old MCUpdater, "passing .zip files around", Technic, etc etc etc.

If you are more technically inclined and have some server hosting space to spare, you might want to consider things like packwiz - this adds a MultiMC pre-launch hook that automatically updates modpacks - or SKCraft Launcher, a sort of "white-label launcher" that distributes whatever modpacks you like.

You could also use https://github.com/SKCraft/Launcher , which requires you to host your own webserver, in case you want to bundle in mods not on Curseforge (Optifine comes to mind). This option is a middle ground in complexity between 'complete DIY' and 'Curseforge pack', while allowing at least some of the flexibility afforded by DIY.

I didn't make it. It's the SKCraft Launcher and it's not sketchy. It's extremely well-developed, functional, and really just what we needed for our community. It's made by sk89q, the same developer of WorldEdit.

SKCraft Launcher

If you cannot - https://github.com/MultiMC/Launcher/wiki/Unsupported-Intel-GPUs

MultiMC

maybe : https://github.com/MultiMC/Launcher/issues/41

Here is a link to Modloader for MCb173. It needs adding directly into the minecraft.jar file, however if you use a launcher like MultiMC, which you can find here: https://multimc.org/ then there is an option to 'add to minecraft jar file' which does the same thing.

I used to have this issue lots, and it was due to my internet being too restrictive. The Minecraft Launcher was refusing to open, and I fixed it by messing with the restrictions until it worked. Hopefully this helps :) if all else fails of course, try just reinstalling it! I’m sure that all your config files don’t get affected by reinstalling it, but just in case make a backup. And if all ELSE ELSE fails, you could switch to a completely different launcher, like MultiMC! Good luck!

If you are willing to try out the launcher - MultiMC which you can find here (there is a Mac option available) : https://multimc.org/ then I have put together an MCb173 pack that has been made for MultiMC. You just use the 'import from zip' option.

Download MultiMC from their official site https://multimc.org/

Others than that, if you insist, you can take a look at the launcher which u/reginakinhi provided or find others on the internet (GitHub for example). Since PrismLauncher is written in C++, and if you are not familiar with it, you should see other launcher as well. Or else https://github.com/MultiMC/Launcher is an alternate.

The best way to experience beta 173 is to play beta 173, and perhaps add some mods to it a little later. One of the better launchers to use for old versions and for playing modded is to use the MultiMC launcher which you can find here: https://multimc.org/

This will only assist if you are using MultiMC as your Minecraft launcher as it is a MultiMC instance which you can use the 'import from zip' option. MultiMC can be found here: https://multimc.org/ It includes IC2 1337 with several add-on mods which have also been back-ported to work with it, such as the Thermometer, Advanced machines, etc. You can disable the add-ons you do not wish included. There is also buildcraft and redpower added as well.