All the Archive links for each slide from the Discord alternative research done by u/VitalikPro13 (aka AnonListen). The log with installers signatures is here: anonlisten.com/AltSignatures_Jul21.txt

Slide 1:
Hollow - https://github.com/VitalikPro13/HOLLOW
Fluxer - https://github.com/fluxerapp/fluxer
Stoat - https://github.com/stoatchat/
Element - https://github.com/element-hq
Chatto - https://github.com/chattocorp/chatto
Sharkord - https://github.com/Sharkord/sharkord
Spacebar - https://github.com/spacebarchat
Howl - https://github.com/Howl-LLC/Howl
Commetchat - https://github.com/commetchat/commet
Armada - https://gitlab.com/soapbox-pub/armada
Nerimity - https://github.com/Nerimity
DCTS - https://github.com/hackthedev/dcts-shipping/tree/beta
Weered - https://github.com/Weeredjs/Weered

Slide 2:
[1] https://archive.ph/UMWV9 (or raw markdown content at https://archive.ph/jxRBx) - https://github.com/hackthedev/dcts-client-shipping/blob/main/README.md /\ https://raw.githubusercontent.com/hackthedev/dcts-client-shipping/refs/heads/main/README.md
[2] https://archive.ph/xR99Z - https://docs.chatto.run/getting-started/faq/ ("Is Chatto end-to-end-encrypted?")
[3] https://archive.ph/TdIPx - https://fluxer.app/privacy (Section 9, "A note on encryption.")
[4] https://archive.ph/JjFOw - https://github.com/orgs/stoatchat/discussions/951 (answer by IAmTomahawkx)
[5] https://archive.ph/FAeDJ - https://osmium.chat/privacy/ (Section 7, "Important Limitation")
[6] https://archive.ph/cwb7W - https://sharkord.com/docs/common-questions (last question)

Slide 3:
All signatures can be accessed at https://anonlisten.com/AltSignatures_Jul21.txt

Slide 4:
[1] https://archive.ph/IpuBs - https://docs.dcts.community/Privacy%20Policy ("Data Processing")
[2] https://archive.ph/RNrHH - https://docs.chatto.run/guides/operations/privacy-erasure/ ("Encryption Coverage", column Data, row 2)

Slide 5:
[1] https://archive.ph/IpuBs - https://docs.dcts.community/Privacy%20Policy ("Reponsibility")
[2] https://archive.ph/TdIPx - https://fluxer.app/privacy (Sections 1,  6.1 and 7.10)
[3] https://archive.ph/mU2LM - https://stoat.chat/legal/privacy-stoat-supplement ("What we collect on Stoat")
[4] https://archive.ph/Qqh9y - https://app.howlpro.com/privacy-policy (Sections 1.1, 1.2, 3-7, 10, 24)
[5] https://archive.ph/TBy1L - https://matrix.org/legal/privacy-notice/ (Sections 2.2.2, 2.9, 2.11)
[6] NOTE: The page is archived at https://archive.ph/queFQ but they have a protection against it, so it shows a black screen. But since their code is open, you can check it at https://github.com/Nerimity/nerimity-web/blob/main/src/pages/PrivacyPage.tsx (raw archive is at https://archive.ph/cTKqs) - https://nerimity.com/privacy ("Information We May Inspect")
[7] https://archive.ph/uESIC - https://osmium.chat/terms/ ("Your Content")
[8] https://archive.ph/LEbX4 - https://gamevox.com/privacy/ (Section 8.1)
[9] https://archive.ph/fsaqc NOTE: cookies dialog covers some part of Section 2, but the screenshot is available at anonlisten.com/ScrWeered.png - https://weered.ca/privacy (Section 1, 2)
[10] https://archive.ph/Haf5q - https://www.rootapp.com/privacy-policy ("International Personal Information Transfers", "Our Use of Personal Information", "Our Disclosure of Personal Information")

Slide 8:
[1] https://archive.ph/FAeDJ - https://osmium.chat/privacy/ (Section 2.1)
[2] https://archive.ph/jqNI9 - https://yapper.gg/pricing
[3] https://archive.ph/1996e - https://www.rootapp.com/terms-of-use (Section 5)
[4] https://archive.ph/aVgmS - https://fluxer.app/plutonium
[5] https://archive.ph/hbeq2 - https://gamevox.com/pricing/
[6] https://archive.ph/vYQSq - https://howlpro.com/pricing
[7] NOTE: I found specific code for two claims, so raw content is archived here: https://archive.ph/mWk3K /\ https://archive.ph/ueX8B - https://raw.githubusercontent.com/Nerimity/nerimity-web/refs/heads/main/src/components/main-pane-header/ScreenShareModal.tsx /\ https://raw.githubusercontent.com/Nerimity/nerimity-server/refs/heads/main/src/common/nerimitySupporterCdnMessage.ts
[8] NOTE: same Weered cookies, as always: https://archive.ph/1Yv8C /\ screenshot at anonlisten.com/Weered_Pricing.png - https://weered.ca/premium

Slide 9:
[1] https://archive.ph/e8YaI - https://matrix.org/docs/matrix-concepts/end-to-end-encryption/ ("Blocking / Verifying devices")
[2] https://archive.ph/XGGAb - https://sharkord.com/
[3] NOTE: black text, highlight it to see something. https://archive.ph/MXloT | https://archive.ph/sxj20 - https://chatto.run/self-hosted | https://chatto.run/cloud
[4] https://archive.ph/77iG7 - https://docs.dcts.community/Getting%20started
[5] https://archive.ph/v6vW4 - https://yapper.gg/faq ("What do I need to self-host Yapper?")
[6] https://archive.ph/z6UI7 - https://docs.spacebar.chat/faq/ ("Is Spacebar still in development? Production Ready?")

Slide 11:
[1] https://archive.ph/TCKRW - https://gamevox.com/ ("Native app, not Electron")