| License | Key Features | Copyleft? | Commercial Use | Compatibility | |---------|--------------|-----------|----------------|----------------| | | Strong copyleft – any derivative work must also be GPL | Yes | Yes | Limited with proprietary code | | LGPL | Allows linking with proprietary software | Weak | Yes | High | | MIT | Very permissive – only requires preservation of copyright | No | Yes | High | | Apache 2.0 | Permissive, includes patent grant | No | Yes | High | | BSD | Similar to MIT, but with non-endorsement clause | No | Yes | High |
C-DAC sometimes provides "ISM Basic" versions for individual or government use, often supporting standard Unicode and Inscript layouts for basic typing. 3. Key Features Included in Licenses ism 6.2 software licences from cdac