Here are some common chat applications for projects:

1. WeChat: WeChat is the most popular instant messaging application in China with a huge user base, providing text chat, voice call, video call, file transfer and other functions. It also allows the creation of group chats to facilitate team collaboration.

2. DingTalk: DingTalk is an enterprise communication tool developed by Alibaba Group, providing team collaboration functions similar to Slack, including real-time chat, video conferencing, file sharing, etc. It also supports enterprise office functions such as work calendar, task management, and approval process.

3. QQ: QQ is an instant messaging software developed by Tencent with a huge user base. In addition to basic chat functions, QQ also provides group chat, video call, desktop sharing and other functions, which are suitable for communication of small project teams.

4. Feishu: Feishu is an enterprise communication tool under ByteDance, providing team collaboration functions similar to Slack and WeChat. It supports real-time chat, video conferencing, file sharing, task management and other functions, and has a strong security and privacy protection mechanism.

These applications are widely used and recognized in China. You can choose a chat application suitable for your project according to your team's needs and preferences.

There are many project collaboration apps on the market that can chat, among which the more well-known ones include Slack, Microsoft Teams, Zoom, Trello, etc. These apps all provide real-time chat, video conferencing, file sharing, task assignment and other functions, which can help team members collaborate more efficiently.

Slack and Microsoft Teams are similar apps. Both provide powerful chat and collaboration tools and can be integrated with other tools, such as Office 365.

Zoom is an app focused on video conferencing that can support large-scale online meetings.

Trello provides task management and assignment functions, which can help teams better organize and arrange work.

There are many applications that can chat while working on projects. Some of them include: Slack, Microsoft Teams, Google Hangouts, Discord, Trello, Asana, Basecamp, Jira, Flock, Rocket.Chat, etc.

These applications provide real-time chat, file sharing, task assignment, team collaboration and other functions, which can help team members communicate and collaborate effectively in projects. According to the needs and preferences of the team, you can choose the application that suits you to improve the efficiency and cooperation of the project.

WeChat, QQ, Feiqiu, DingTalk, SMS, MSN

Generally, it is WeChat, QQ, Telegram group, HuoXin can also be used