Top 3 Java survival Projects

Slimefun4

8 915 9.4 Java

Slimefun 4 - A unique Spigot/Paper plugin that looks and feels like a modpack. We've been giving you backpacks, jetpacks, reactors and much more since 2013.

Project mention: vanilla 1.19.4 plugins | /r/MinecraftPlugins | 2023-05-13

Slimefun, and maybe some addons for it

crafting-dead

1 58 8.7 Java

The Minecraft zombie survival mod.

Project mention: How to replace a specific item globally? | /r/feedthebeast | 2023-06-30

If you want the same chances and amounts as in the original, you probably should just copy the loottable file from their github repo: https://github.com/nexusnode/crafting-dead/blob/1.18.x/crafting-dead-survival/src/generated/resources/data/craftingdeadsurvival/loot_tables/supply_drops/military.json

WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
Islands

1 23 0.0 Java

A spigot plugin for creating customisable home islands with different biomes. https://www.spigotmc.org/resources/islands-home-islands-system.84303/

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).