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MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Chordsheet Maker - Create chord sheets or lead sheets quick and easily from your iPad. Add rhythms, endings, segno, codas and all what's necessary for your musicians to know what's your music about. Transcription made easy!
BizConnector - BizConnector offers marketing and workflow automation solutions to small businesses.
Tonelib JAM - Create, edit, print and listen to tablature and guitar sheet music
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
Aria Maestosa - Aria Maestosa is an open-source (GPL) midi tracker/editor.