Opal vs Sfletter
A side-by-side look at Opal and Sfletter. For an in-depth review of either product, follow the links below.
Opal
Office & Productivity
Opal is an open-source alternative to Microsoft OneNote for taking notes and organizing information. It allows users to create digital notebooks to capture text, drawings, and web clippings.
notesorganizationopensource
Sfletter
Office & Productivity
Sfletter is an open-source newsletter application that allows users to easily create, send, and manage email newsletters. It has a simple drag-and-drop editor for building newsletters and custom templates.
newsletteremailtemplatesdraganddropopensource
Related Comparisons
Encipher.it
Orgzly
Mailbox.org
Lockbin
Dashword
Secure Exchanges