MinecraftDome vs SeedLander

MinecraftDome is a free, open-source web app that generates dome geometry and construction plans for Minecraft. You draw connected square-mesh surfaces in circles, rectangles, diamonds, ellipses, or hyperellipses, then add anchors to constrain them. Anchors within a layer are treated as points on a plane defined by three points. Shape calculations include parabolic, catenary, and roof loads; setting load values to zero creates a soap-bubble effect. The display can show ideal blocks, a line grid, or Minecraft blocks, with an option requiring adjacent blocks to meet by a face. Generated plans are fixed-width plain text for copying, pasting, or printing. X and Z markers appear every 16 blocks and Y markers every 8, with chunk-line offsets. The documented version has no save, restore, or undo. Catenary calculations can run to infinity, so reset may be needed.

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.