A breakdown of apps you can use to communicate with your alters as separate people and write down information about them online and offline with their pros, cons, and a personal rating because I really needed it when I was new to being a system:
Note: by "PC" I mean any computer/macbook/etc. By "all devices" I mean PC, mobile, tablet, iPad, etc.
I apologize for mistakes in advance.
1. Antar: An app created to chat with your "inner self," found in both Play Store and AppStore. One of the more popular ones among systems. It is an app where you get to create personas that would be chatting with each other in chats called "sessions." Those sessions can either be given a name or just left named after the date they were created on. Each persona is given a color that would become the color of their messages in sessions. Offline app.
Pros: Fiarly easy to use, no in-depth information needed to access it fully. Biometric lock; 4 languages (English, Chinese, Hindi, Spanish) for the system, however any language can be used via text; no limit to the amount of personas added (as far as I'm aware). Messages sent by the wrong persona can be changed; the "quote" feature allows you to start a thread under a message; provides descriptions of each persona. You can also give your personas an avatar rather than just a color. Has a "replay" and "visualization" feature, though I'd say it's strictly just for funzies.
Cons: Not available on PC; has no backup, phone-related resets or deletion of the app results in all information lost. Session order constantly changes depending on which senssion you entered, which in my opinion (+OCD) is a nuisance; you can't delete the "me" character which I've been wanting to do for a while. Can't add hexcodes.
Personal rating: 6/10. If you need an app that you can lock from unwanted visitors, if you don't mind and even prefer something simple, and if you don't care that the conversations might disappear, this app is a good choice.
2. Discord's PluralKit: A more avdanced discord bot with tons of settings and commands that was created specifically for systems. Allows you to add almost any information about your system memebers, even such things as birthdays. The way it works is, it "proxies" your messages with a certain command somewhere in the "normal" message, sends a message identical to yours from a bot created with the name you chose, and deletes your original message. Basically replaces a message from your account with a message from a bot you created earlier. Proxies are small commands that give the both a green light to do that, and they can be whatever you want them to be. Online bot.
Pros: Feels like different people are talking; allows you to track your switches; available on all devices; one system can be linked to multiple accounts, although you can't create multiple systems under one account; allows you to group alters together; allows you to restrict access to certain information from all users; allows you to add as many alters as you want; has a number of ways you can access the information you put in which would all be sorted and organized for you; autoproxy allows you to not proxy every message you sent; since you can't delete messages of other people on servers that are not yours, and the bot messages are not, in fact, yours, PluralKit allows you to react to the message with an emoji that deletes the proxied message; while you can't use it in DMs, you can set up commands in DMs with the bot; every memeber has a unique code, and so does the system itself, and it records when the member was created; can be exported to SimplyPlural.
Cons: Commands are difficult and complex, and so is the dashboard; can only be used on servers; sometimes offline as all bots are, though rarely; you can't use it anywhere outside discord (a con for those who don't use discord); I had instances where I saw people use it for roleplay which is also allowed; proxies are a pain; you'd need a guide to tell you why certain things are needed in it; you cannot reply to messages with gifs when using a proxy; when being exported to SimplyPlural it exports everything, so if you had 10 members on SimplyPlural and 15 on PluralKit, it's best to add those 5 manually than delete 10 new exported alters (I did it with 100+ alters by accident and it was a pain).
Personal rating: 9/10. Complex, difficult to figure out, but once you get ahold of it and how it works, you'd be amazed. Also a pain that you can't use it in DMs, but it's to be expected from a bot. And you can always create a server with just you.
3. Discord's Tupperbox: A discord bot created mainly for roleplay, but actively used by systems who cannot get along with PluralKit. A simpler bot, easy to use and figure out, most things can be done via dashboard, doesn't have the opportunity to add a lot of inofrmation. Online bot.
Pros: Simple; allows grouping alters; allows different tags for different members and groups, sometimes individually; way simpler commands, and most things can be added via dashboard; looks and works almost the same as PluralKit when in a conversation; available on all devices.
Cons: Can't add avatars via dashboard, only using the commands; can't add two alters with the same name (which you can do with PluralKit); people reported it glitching out and deleting members; mainly used for roleplay; gives a weird list of members via commands that is unusable in my experience; doesn't work out of discord.
Personal rating: 7/10. Perfect for people who just want to talk and not write down information about them with the bot, but the threat of members being deleted, especially as a larger system, is concerning. We mainly use it for OSDD-1a subsystems. It was also not created for systems, as far as I'm aware. I see more cons than pros.
4. Simply Plural: Another more well-known tool used and created for systems. Simply Plural is an app that allows you to create profiles of your members and add any information you'd like about them via custom fields. It has a chat feature, allows you to track your front and switch history, add friends, and many more. Supports endogenic systems (which is being mentioned not for discorse purposes but as a fact. Whether you find it good or not is up to you) and allows singlets to create profiles as well, although I don't know a lot about that part. Both offline and online app.
Pros (and a bit about the app): Backup included; tracks your switches and front, allows you to change exact time for them, too (24-hour clock down to minutes included); the polls feature works like polls on same Tumblr and everywhere else but specifically for your system memebrs; analytics provide information about who fronts the most, during what time of day they usually front; you and your friends can see each other's profiles, which is why singlets can also create profiles, which allows you to acces info about each other's systems; "trusted people" feature allows you to pick whether you want everybody to see your alters or not, or if you want outsiders to see your profile at all; provides resources and guides to plurality (which I personally haven't checked, but still putting it in the pros, if somebody thinks I shouldn't, let me know); has an app reminders feature; you can add as much information as you want; front history shows up in a person's profile; alters can add notes; alter groups are available; available on all devices, however, only as a website on PC; colors of your alters can be used in the chat to highlight names; hexcodes are available; "custom front" is a status you set with fronting which can be hilarious sometimes; connects to PluralKit in a number of ways.
Cons: The chat feature is a bit difficult to use, and first time I did, I freaked out because I couldn't get out of it (the trick is to go to "channels" and press "navigation", there you'll see the dashboard); friends can't communicate with each other; copy-pasting is hard on both mobile and PC; something about the interface and navigation irks me and our visually impaired self; notes have same visibility as the profile itself, which is inconvenient if you want your profile to be seen but not your notes; avatars can't be added via website.
Personal rating: 6/10. I don't like how it looks and works (probably due to being visually impaired and other issues), but if you manage to get the information in it, it's pretty accessible and thoughtful of what systems might need. Could be used as a tool to start working with your system rather than do it long-term.
5. Twinote: An app that is your "personal Twitter." Pretty sure it was created for the purpose of having fun rather communicating with alters. Offline app.
Pros: Backup provided; allows "private accounts" that other "users" can't see; can create as many users as you want, as many posts as you want; can upload up to 4 images; works almost like Twitter; has a chat feature; comments, retweets, likes are present; "lists" feature allows you to group users and see only their messages which could be used for "things only protectors sent" and such; storage shows all pictures used in the app, so you won't lose anything; tagging and following people is still an option, and following private accounts give that user an opportunity to be the only one seeing their tweets.
Cons: Can't upload videos; can't do much with anything other than posts and profiles, so trends and other stuff there is off-limits (as far as I know); you have to constantly switch between profiles for the chat feature; share button only shares the contents of the message; very easy to accidentally press the wrong button and delete a tweet by dragging it left (which I almost did a few times).
Personal rating: 7,5/10. I know it's probably annoying that I didn't just type either 7 or 8, but the reaosn why is cause I have mixed feelings about it from a practical point of view. We use it strictly to communicate what we did during the day as a small journal and just joke with each other, and it's incredibly funny in itself, but it doesn't allow you to write down a lot of information about your alters and has a character limit in profiles. So it's strictly for communication.
6. Notion: An app created as a dashboard for literally everything you could ever dream of. You can personalize it however you want and use it for whatever you want. Those who saw the post we made a while ago probably know the reason I'm mentioning it is due to a template that I linked here. Online app.
Pros: Can be used for literally everything without limits; available on all devices; big and has enough storage for a lot of information, text, projects, etc; can be designed however you want; a lot of useful templates for all life instances (even taxes); can be shared with people who also use Notion in a variety of ways (either only comment, only see, etc); can add your own custom covers and icons via both gallery and links; looks neat and doesn't mess with visual impairment for us; can add a page in a page in a page which can be used for diaries; links to different pages on other pages are also available; endless possibilities, I could rant all day.
Cons: Glitches on the phone a lot; certain things are allowed on computer and not on mobile and vice versa; all templates available only on PC; you need to have an account in order to use it; glitches if it's offline; sometimes deletes a bunch of text because of glitches, usually the triggers for it are writing a lot in it directly or erasing previous text a bunch of times; can't invite someone in your space, it would take too much storage; some storage needs to be bought, although, I don't know the limit (but there's a lot. Like, a lot)
Personal rating: 9/10. With all its antics, I love this app dearly, it's incredibly useful, and you learn to deal with the cons. It's the best one I've used for communication and information storage so far.
7. Texting Stories app: As ridiculous as it sounds, it could be used as a tool to communicate with your alters, especially in secret. We are fighting for our safety here, so I ask you to take this suggestion seriously. Could be used when you don't want to let anyone know you're a system and have noisy family members/relatives/etc who like to snoop through you personal devices, by using it, you can say you've just been doing a story. Offline app.
Pros: I believe you can add as many people as you want; can add avatars; different stories can be different days of the week; easy to use; easy to brush off as "just making stories."
Cons: Can't change colors, you need to pay for most things.
Personal rating: 5/10. Can be used for emergencies and communication only, although we haven't used it much.
8. Notes: Just the same plain old notes app on your phone that everybody has installed as default. Offline app.
Pros: Easy to use; can be easily lost within your other notes for privacy; used for literally everything you desire, even drawing; automatic backup.
Cons: Doesn't give you the ability to really present as separate people; doesn't have as many options as Notion.
Personal rating: 5/10. used it at some point just for communication, was cool, somple, easy, but nothing too big.
I hope this helped to put these apps in perspective. I do apologize for it being a bit all over the place, but I did attempt to make it coherent enough (I am currently in a psychotic state, it's difficult for me to communicate). And remember, there are always options to use a written journal rather than a digital one. If anything, it's better to keep both in case one gets lost. Who knows, maybe our parents asking us what we would do if the internet disappeared is actually a warning. /j /nm
