Thunderbird, Microsoft Office Outlook, Apple Mail, Mailbird, Evolution, Mailspring, Postbox, eM Client, Airmail, EssentialPIM, Mutt, BlueMail, Windows Live Mail, Juicy Mail, Microsoft Mail and Calendar, Foxmail, Trojitá, Microsoft Outlook Express, WunderMail, MailMate, ProfiMail, Betterbird, Opera Mail, nPOPuk, Nylas Mail Lives, Canary Mail, Mailpile, Nextcloud Mail, Polymail, Hiri, Sylpheed, TouchMail, SolMail, Simple Mail, aerc, Koma-Mail, Claws Mail, Pantheon Mail, Mailbox for Zoho, EmailTray, DreamMail, Ymail2, Columba, Icedove-UXP, Inbox2, GyazMail, Postler, Mailsmith, InboxZero, Mulberry, Mail Pilot, Email.biz, Smampi are some alternatives to Geary.