Craftdex vs SeedLander

Craftdex is a free web directory and reference for Minecraft players, servers, skins, capes, and game information. Its Java seed map runs in the browser, calculating biomes, slime chunks, and structure positions from numeric or text seeds. Processing happens locally, so the seed is not sent to a server; markers stay in the browser for that seed and are not uploaded. Additional tools include Minecraft calculators, generators, finders, lookups, command builders, and server ping utilities. Reference material covers crafting, brewing, enchantments, effects, mobs, villager trades, food, fuel, blocks, biomes, structures, advancements, updates, and redstone. Craftdex says game data comes from Mojang asset data and is checked against Minecraft Wiki. Live player, server, skin, and cape listings use public Minecraft APIs and refresh continuously. The site describes itself as an independent, player-run fan reference, unaffiliated with Mojang or Microsoft. Its free plan costs nothing and supports both editions.

SeedLander is a browser-based toolkit for analysing Minecraft seeds in Java Edition and Bedrock Edition, including Java Large Biomes. Its tools cover biome maps, structure searches, ore predictions, slime chunk calculations, portal management, and team collaboration. The structure finder covers 25+ types and provides coordinates for places such as villages, strongholds, temples, mansions, and monuments. SeedLander states that most structure results on Java and Bedrock are 97%+ accurate, while cautioning that they are predictions rather than guarantees. The tools run in the browser using WebAssembly, and seeds are not sent to SeedLander servers for processing. Map, finder, and account pages support touch use on phones and tablets; a dedicated mobile app is on the roadmap. The free Basic plan includes all seed tools, 10 custom markers, and three saved portal pairs. Premium costs £1.99 per month per world and adds unlimited markers and portals, ore tracking, structure completion tracking, notes, and an activity log. A Team add-on costs £2.99 per month per world on top of Premium.