IBM Plex

IBM Plex Sans
CategorySans-serif
ClassificationGrotesque
Designer(s)Mike Abbink
Paul van der Laan
Pieter van Rosmalen
FoundryIBM
Bold Monday
LicenseSIL OFL
Latest release version3.5
Latest release date20 September 2023; 15 months ago (2023-09-20)
IBM Plex Sans Condensed
CategorySans-serif
ClassificationGrotesque
Designer(s)Mike Abbink
Paul van der Laan
Pieter van Rosmalen
FoundryIBM
Bold Monday
LicenseSIL OFL
Latest release version1.4
Latest release date28 July 2022; 2 years ago (2022-07-28)
IBM Plex Mono
CategoryMonospaced
Designer(s)Mike Abbink
Paul van der Laan
Pieter van Rosmalen
FoundryIBM
Bold Monday
LicenseSIL OFL
Latest release version2.4
Latest release date21 December 2023; 12 months ago (2023-12-21)
IBM Plex Serif
CategorySerif
ClassificationTransitional
Designer(s)Mike Abbink
Paul van der Laan
Pieter van Rosmalen
FoundryIBM
Bold Monday
LicenseSIL OFL
Latest release version3.1
Latest release date27 November 2023; 13 months ago (2023-11-27)

IBM Plex is an open source typeface superfamily conceptually designed and developed by Mike Abbink at IBM in collaboration with Bold Monday to reflect the design principles of IBM and to be used for all brand material across the company internationally. Plex replaces Helvetica as the IBM corporate typeface after more than fifty years, freeing the company from extensive license payments in the process.[1]

Version 1.0 of the font family had four typefaces, each with eight weights (Thin, Extra Light, Light, Regular, Text, Medium, Semi-bold, Bold) and true italics to complement them.[2]

  • IBM Plex Sans – A grotesque sans-serif typeface with a design that was inspired by Franklin Gothic. Other sans-serif classifications were rejected on the basis of being too soft (humanist), inefficient (geometric) and overly perfected (neo-grotesque). Some of Franklin Gothic's features such as the angled terminals, a double-storey g and a horizontal line at the baseline of the 1 are used in IBM Plex Sans. On 7 April 2019, IBM Plex Sans Variable, a variable counterpart to IBM Plex Sans was released.
  • IBM Plex Sans Condensed – A condensed variant of IBM Plex Sans.
  • IBM Plex Mono – A monospaced typeface based on IBM Plex Sans. The italic design was inspired by the Italic 12 typeface used on the IBM Selectric typewriter; this is particularly evident with the italicised i, j, t and x letters.
  • IBM Plex Serif – A transitional serif typeface with a design that was inspired by Bodoni and Janson. Other serif classifications were rejected for being too humanist and outdated (old-style) and too clunky and unrefined for long text (slab-serif). Some of Bodoni's features such as ball terminals and rectangular serifs are used in IBM Plex Serif.

Unicode coverage

As of version 1.0 the IBM Plex typefaces support over 100 languages with most that use the Latin alphabet (including Vietnamese), as well as Cyrillic (except in IBM Plex Sans Condensed). In version 3.0 of IBM Plex Sans, support for monotonic Greek was added.[3] For other writing systems separate fonts were made without italics:

  • IBM Plex Sans Hebrew – Adding support for the Hebrew writing system.
  • IBM Plex Sans Thai – Adding support for the informal loopless Thai script, released on 15 October 2018.[4]
  • IBM Plex Sans Thai Looped – Adding support for the formal looped Thai script, on 5 April 2019.[5]
  • IBM Plex Sans Devanagari – Added support for the Devanagari writing system, released on 14 December 2018.[6]
  • IBM Plex Sans Arabic – Added support for Arabic script, released on 13 March 2019.[7]
  • IBM Plex Sans Korean – Added support for the Hangul alphabet, released on 8 June 2020.[8]
  • IBM Plex Sans Japanese – Added support for Japanese writing system, released on 24 July 2021.[9]

In addition, both Mike Abbink and Bold Monday have confirmed to be working on support for CJK, Bengali, Tamil and Kannada.[10][11][12]

There is also support for common mathematical and currency symbols (including Bitcoin (₿) #U+20BF which was ratified into Unicode in 2017) as well as ligatures such as fi and fl, along with stylistic alternates for a, g and 0.

There are a few unreleased symbols for IBM Plex Sans Condensed, IBM Plex Mono and IBM Plex Serif such as the generic currency sign (¤), prime symbol (′) and double prime symbol (″). In addition Mike Abbink has confirmed support for the Mathematical Operators block and support for the symbols used in the APL programming language in 2019.[13][14]

The FCC #EFCC and CE marking #ECE0 logos are encoded as glyphs within the Private Use Area.[15] Prior to version 1.0, five IBM logos (solid and 8-bar logos, and the I-Bee-M logo) #EBE1 to #EBE7 were also encoded as glyphs.

Licensing

IBM has licensed the font files only under the SIL Open Font License (SIL OFL).[16] Between 9 August 2018 and 21 August 2018, the fonts were also dual-licensed under the Apache License. This dual-licensing arrangement was rescinded due to concerns that the Apache License is unsuitable for fonts.[17] The SIL OFL license is free and open-source, but building the fonts from source requires FontLab Studio, which is proprietary software.[18]

Bold Monday also provide web development code in CSS, SCSS and JavaScript that is related to the fonts under the Apache License.[19]

IBM Plex's name is reserved, as allowed by the SIL OFL, and trademarked as of December 2017.[20][21]

See also

References

  1. ^ Quito, Anne (10 November 2017). "IBM has freed itself from the tyranny of Helvetica". Quartz. Retrieved 14 November 2017.
  2. ^ "IBM Plex - 03 Plexness". IBM. Retrieved 14 August 2018.
  3. ^ "Add support for (modern) Greek. #179". GitHub. Retrieved 12 August 2018.
  4. ^ "CHANGELOG.md". GitHub. Retrieved 12 August 2018.
  5. ^ "v1.4.1 – Add IBM Plex Thai Looped support". GitHub. Retrieved 12 April 2019.
  6. ^ "v1.2.3 - Davanagari support". GitHub. 14 December 2018. Retrieved 14 December 2018.
  7. ^ "Arabic support". GitHub. 13 March 2019. Retrieved 13 March 2019.
  8. ^ "5.0.0". GitHub. 8 June 2020. Retrieved 15 June 2020.
  9. ^ "Release v5.2.1 · IBM/plex". GitHub. Retrieved 2021-07-26.
  10. ^ "IBM Plex editable sources? #68". GitHub. Retrieved 14 January 2018.
  11. ^ "IBM Plex – 05 Specs". IBM. Retrieved 14 August 2018.
  12. ^ "Kannada typeface #257". GitHub. Retrieved 15 July 2019.
  13. ^ "Suggestion: ≔ and ≝ #122". GitHub. Retrieved 23 January 2018.
  14. ^ "APL Glyphs Absent #176". GitHub. Retrieved 23 January 2018.
  15. ^ "IBM Plex". Font Squirrel. Retrieved 11 January 2018.
  16. ^ "LICENSE.txt". GitHub. Retrieved 23 August 2018.
  17. ^ "Add Apache license into all font folders (This will live as a dual license with the OFL) #190". GitHub. Retrieved 9 August 2018.
  18. ^ "Please allow building from source with a free toolchain #98". GitHub. Retrieved 22 June 2018.
  19. ^ "README - Building the fonts from source". GitHub. Retrieved 22 June 2018.
  20. ^ "Trade mark number UK00003255123". Intellectual Property Office (United Kingdom). Retrieved 22 June 2018.
  21. ^ "IBM Plex – Trademark Electronic Search System". United States Patent and Trademark Office. Archived from the original on 21 August 2018. Retrieved 21 August 2018.

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