Xmind, FreeMind, MindNode, MindManager , SimpleMind, yEd Graph Editor, TheBrain, MindMeister, Freeplane, Coggle, LibreOffice - Draw, Metro Retro, Reetro, IdeaClouds, TeamRetro, Wondershare EdrawMind, Retrium, text2mindmap, Better for Teams, RetroTime, Sprintlio, Retroly, Memofon, Neatro, PsiPlore, Instant Agenda (Instant Retrospective) are some alternatives to GroupMap.