the company, this policy was dropped in February 2014. With the release of Mellel 4.0 Mellel AAR, the developer, announced that a for fee upgrade policy was re-instated (two years of free updates). This policy does not apply to users who've purchased Mellel during the "lifetime" period. The current version of Mellel, 5.0, reportedly supports MacOS 10.7.x or later. Although Mellel is compatible with OS 10.15 Catalina, users may not want to upgrade to Catalina if, e.g., they use MathMagic or MathType to insert equations. These are not 64 bit compatible as of July 2020. See also List of word processors MathMagic equation editor for Mellel, supporting automatic baseline alignment MathType equation editor for Mellel. Bookends bibliographic program, tightly integrated with Mellel References External links Company homepage About Mellel MacOS-only software MacOS word processors Shareware Software companies of Israel