素粒子

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====== Messaging apps ======

  - Best overall((Just because it's the best doesn't mean you should use it.)): Telegram! Telegram is the best messaging app, but not the most secure((Server can read all messages unless you use 'secret chats', which have not been broken, but are a custom type of encryption many people have expressed skepticism over.)). It is the most feature rich, has the most luxurious apps across all platforms, beautiful animations, and generally is wonderful. The app to copy. Suddenly gained a reputation for hosting white supremacist content, so now using Telegram is socially problematic. Voice calls are garbage quality.
  - Most secure((Signal and WhatsApp use the Signal protocol, aka the Axolotl Ratchet, which is the most advanced encryption scheme that exists for messaging.)): Signal. That's all. Phone number identity sucks. Sluggish. Feels terrible to use.
  - Second most secure: WhatsApp. Kinda bad. Sluggish. Poor features. Phone number identity sucks. Sluggish. Founders promised “no ads, ever.” In 2025, it got ads.
  - Discord: Slowly becoming the QQ of the west in every meaning of the word. Insecure. Only thing that makes it noteworthy is that everyone is using it. Totalitarian moderation system((You would actually expect this type of behavior from WeChat or QQ, but surprisingly, neither of those services will ban you for jokingly saying "im 12".)) bans you for saying "im 12" as a joke. Voice calls are pretty good quality.
  - LINE: "Letter Sealing" security is ok((Functionally it's E2EE but the backup mechanisms are not well-documented or known secure.)). Functionally, security defeated by various backup systems like LYP backup. Has ads in Japan (even with LYP).
    - Seriously, LYP((Line Yahoo! Japan PayPay)) or whoever you are, please explain to me why LINE in Japan has like 9 billion ads even if you pay for LYP Premium?
    - Using LINE outside of Japan is kind of great because it has no ads.
      - BUT, if you do this, you can't buy LYP Premium which is actually pretty good, because it gives you fancy features like cloud backups that are easy to use and original quality photos.
  - iMessage: Only secure if all of your friends have Advanced Data Protection enabled, which they don't((If disabled, your contacts are leaking your chats to the server.)). Screws up contact photos and contact data more often than not. Frequently sends messages from the wrong source. Routine cause of confusion. Sluggish. You can't search inside individual chats. You can't archive chats.
  - WeChat: hands-down best automatic translation feature ever. Only app that makes communicating in foreign languages easy. Impossible to use with anyone outside of China who doesn't have Chinese friends, due to requiring existing users to invite new users. Risk of account bans for foreigners who invite problematic users.
  - Wire: Bad. Sluggish.
  - Viber: Bad. Sluggish.
  - Instagram: Insecure. Very fluid, though. Middling feature set.
  - Facebook Messenger: Middling feature set.
  - QQ: China only. Kinda overloaded app. Kind of sluggish. Overall nice social features. Very well-built.
  - Google chat products: Likely to shut down, get merged, or rebranded. Functionally dead post-Hangouts and Google Talk.
  - Slack: The best work chat app.
  - Microsoft Teams: If anyone forces you to use Microsoft Teams, I'm sorry.
  - KakaoTalk: So I haven't used KakaoTalk.

===== Serious Recommendations =====

  * You want the most fluid app with the most features and no security: Telegram.
  * You care about security and you know that the chat experience will suck: Signal.
  * You care about security a little bit less and you have European friends: WhatsApp.
  * You have friends on Discord: Discord.
  * You have friends in China: WeChat.
  * You live in China: QQ.
  * You live in Japan and/or have friends that live in Japan and/or you want a pretty fluid app with moderately good security: LINE.
  * You are addicted to Instagram and/or have friends from Taiwan: Instagram
  * You live in Korea, wish you lived in Korea, or you're learning Korean: KakaoTalk.
  * You hate your friends: iMessage OR Microsoft Teams.
  * You hate your coworkers: Microsoft Teams.

===== Mandatory Apps =====

  * China: WeChat.
  * Korea: KakaoTalk.
  * Europe: WhatsApp.
  * America: iMessage.
  * Russia: Telegram.
  * Taiwan: LINE.
  * Japan: LINE.
  * Korea: KakaoTalk.