Too many items

Create and delete items in-game, including mod items. Save and load entire inventories. Create unlimited stacks and tools. Test mods, create huge survival worlds, and more. Updated quickly!

TL;DR: It works in singleplayer and multiplayer (if you're an op). Many people find it better than creative mode (and it works in survival mode too, of course). Unlimited stacks are there (shift-click) but you will need ModLoader for them to refresh constantly. If it crashes post a crash report. If you just post "it doesn't work" you won't get help. Use the correct version. Delete META-INF. Finally, 90% of questions in the thread are answered below in this post.

All of TooManyItems except for the small portion excerpted from the original Minecraft game is copyright 2011 Marglyph. TooManyItems is free for personal use only. Do not redistribute TooManyItems, including in mod packs.