diff --git a/guide.md b/guide.md
index 32202a07ec750469665f643ef62d4921f34d4254..0ffda2d86e679d16effd56d1878b47da7cd9b1ee 100644
--- a/guide.md
+++ b/guide.md
@@ -7676,6 +7676,8 @@ You can also consult the following external resources for more comparisons:
 
 -   Secure Messaging Apps <https://www.securemessagingapps.com/> <sup>[[Archive.org]][457]</sup>
 
+-   Bkil, SecuChart <https://bkil.gitlab.io/secuchart/> <sup>[[Archive.org]][1377]</sup>
+
 -   Proton Blog, <https://proton.me/blog/whatsapp-alternatives/> <sup>[[Archive.org]][458]</sup>
 
 -   Whonix Documentation, Instant Messenger Chat <https://www.whonix.org/wiki/Chat> <sup>[[Archive.org]][459]</sup>
@@ -14992,3 +14994,4 @@ You can find some introduction on these on these projects:
   [1374]: https://web.archive.org/web/https://safing.io/portmaster/https://docs.safing.io/portmaster/install/status/vpn-compatibility
   [1375]: https://web.archive.org/web/https://blogs.oracle.com/virtualization/post/install-microsoft-windows-11-on-virtualbox
   [1376]: https://web.archive.org/web/https://www.whonix.org/wiki/Release_Upgrade_Whonix_15_to_Whonix_16
+  [1377]: https://web.archive.org/web/20220704000814/https://bkil.gitlab.io/secuchart/