Version 4.0 - Python 3.9, Ruby 2.7, OpenSSL 1.1.1k (for Qt 5.15), png 1.6.37

MSVC 2017, x86 and x64

• curl (https://github.com/curl/curl.git, curl-7_61_0)
• XML parser library: expat (https://github.com/libexpat/libexpat.git, R_2_2_6)
• pthread-win32: ptw (https://github.com/vancegroup-mirrors/pthreads-win32.git, v-2-9-1-release)
• Python 3.9: python (https://github.com/python/cpython.git, v3.9.13)
• Ruby 2.7: ruby (https://github.com/ruby/ruby.git, v2_7_4)
• Compression library: zlib (https://github.com/madler/zlib.git, v1.2.11)
• openssl (https://github.com/openssl/openssl.git, OpenSSL_1_1_1k)
• libpng (https://github.com/glennrp/libpng, v1.6.37)

Download URL: https://www.klayout.org/downloads/klayout-bits-4.0.zip
Download URL minimum version for PyPI deployment: https://www.klayout.org/downloads/klayout-microbits-4.0.zip

Version 3.0 - Python 3.9, Ruby 2.7, OpenSSL 1.1.1k (for Qt 5.15)

MSVC 2017, x86 and x64

• curl (https://github.com/curl/curl.git, curl-7_61_0)
• XML parser library: expat (https://github.com/libexpat/libexpat.git, R_2_2_6)
• pthread-win32: ptw (https://github.com/vancegroup-mirrors/pthreads-win32.git, v-2-9-1-release)
• Python 3.9: python (https://github.com/python/cpython.git, v3.9.2)
• Ruby 2.7: ruby (https://github.com/ruby/ruby.git, v2_7_4)
• Compression library: zlib (https://github.com/madler/zlib.git, v1.2.11)
• openssl (https://github.com/openssl/openssl.git, OpenSSL_1_1_1k)

Download URL: https://www.klayout.org/downloads/klayout-bits-3.0.zip

Version 2.0 - Python 3.9, Ruby 2.7, OpenSSL included

MSVC 2017, x86 and x64

• curl (https://github.com/curl/curl.git, curl-7_61_0)
• XML parser library: expat (https://github.com/libexpat/libexpat.git, R_2_2_6)
• pthread-win32: ptw (https://github.com/vancegroup-mirrors/pthreads-win32.git, v-2-9-1-release)
• Python 3.9: python (https://github.com/python/cpython.git, v3.9.2)
• Ruby 2.7: ruby (https://github.com/ruby/ruby.git, v2_7_2)
• Compression library: zlib (https://github.com/madler/zlib.git, v1.2.11)
• openssl (https://github.com/openssl/openssl.git, OpenSSL_1_0_2u)

Download URL: https://www.klayout.org/downloads/klayout-bits-2.0.zip

Version 1.0 - First kit version

MSVC 2017, x86 and x64

• curl (https://github.com/curl/curl.git, curl-7_61_0)
• XML parser library: expat (https://github.com/libexpat/libexpat.git, R_2_2_6)
• pthread-win32: ptw (https://github.com/vancegroup-mirrors/pthreads-win32.git, v-2-9-1-release)
• Python 3.6: python (https://github.com/python/cpython.git, v3.6.6)
• Ruby 2.5: ruby (https://github.com/ruby/ruby.git, v2_5_1)
• Compression library: zlib (https://github.com/madler/zlib.git, v1.2.11)

Download URL: https://www.klayout.org/downloads/klayout-bits-1.0.zip