MySQL Workbench, DBeaver, HeidiSQL, phpMyAdmin, Navicat, DataGrip, Sequel Pro, Beekeeper studio, Adminer, DbGate, Valentina Studio, PDOCrud, Chrome MySQL Admin, Model Xtractor, DbSchema, SQLPro Studio, SQL Maestro for MySQL, Querious, QueryPie, myLittleAdmin, SQLECTRON, IBM DB2, UnQLite, SeeQL, DBKiss, Skipper, Panda-Sql, SIDU, MySql Lite Administrator, SQLGate, DataMill, OpenDBViewer, SQLVault, CUBRID Database, Valentina DB ADK, DataBread, Starcounter are some alternatives to Sequel Ace.