Bring adorable AI companions to your desktop! Meet the lively Pero and her friends, share your day, and make memories together. With charming 3D companions by your side, add a little warmth and surprise to work, downtime, and everything in between.

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Early Access Software

Get involved with this software as it develops.

Note: This Early Access software is not complete and may or may not change further. If you are not excited to use this software in its current state, then you should wait to see if it progresses further in development. Learn more

Leaving Early Access: 2027

What the developers have to say:

Why Early Access?

“We would like to invite everyone to help us refine an AI companion app that offers a sense of companionship and can also lend a hand in everyday life. Desktop pet interactions, long-term memory, conversations with multiple companions, and working together with tools all need continued improvement across different devices and real-world situations.

During Early Access, we will use the experiences, bug reports, and suggestions that players choose to share with us to improve stability and ease of use, and to help set priorities for future development.”

Approximately how long will this software be in Early Access?

“We expect Early Access to last approximately 2 to 4 months. The actual duration may change depending on development progress and community feedback. We plan to launch the full version once it reaches our intended level of stability and completeness.”

How is the full version planned to differ from the Early Access version?

“The full version will continue to refine the existing companion and task collaboration experience. Our current areas of focus are:
- Desktop pet interactions: Improve character presentation, model compatibility, and everyday interactions.
- Memory and conversations: Improve how long-term memories are organized and recalled, as well as the experience across different conversation scenarios.
- Tools and tasks: Make file and web operations easier to use, with clearer permission prompts and task feedback.
- Multiple companions and social features: Continue refining Stronghold group chats and connections to social platforms.
- Stability and ease of use: Improve installation, configuration, performance, and error handling based on feedback from actual use.
These priorities may change as development progresses and we receive community feedback. The actual content will depend on future updates.”

What is the current state of the Early Access version?

“The current version supports:
- 3D desktop companions: Summon a companion to your desktop, click to interact, drag her to a different position, and chat with her from the desktop pet interface.
- Custom characters: Choose a built-in companion, adjust her personality, how she addresses you, and her tool permissions, or create a companion of your own.
- Conversations and long-term memory: Chat with your companion, let her record experiences worth keeping, and recall relevant memories in later conversations.
- Stronghold group chats: Bring multiple companions together in a room to chat, and mention them when you would like them to respond.
- Workspace and tools: View and edit files with your companion. When the appropriate tools are enabled, she can help with web pages, files, and tasks, subject to your permission and approval settings.
- Social platforms: Configure QQ, WeChat, Telegram, or Discord as needed, and let your chosen companion communicate with you through the selected platform.
- Models and extensions: Choose built-in or local 3D models, or use compatible models from the Steam Workshop. You can also connect skills, MCP services, and plugins as needed.
Before chatting, you need to configure an available AI model service yourself. Social platforms, voice features, and some tools also require additional setup. Your experience will depend on the model you choose, service availability, and your permission settings.”

Will this software be priced differently during and after Early Access?

“The app itself will remain free and open source forever. This applies both during Early Access and after the full release.

You will need to configure an AI model yourself. Some models or other third-party services may charge fees, depending on the provider you choose.”

How are you planning on involving the Community in your development process?

“We welcome everyone to share their experiences, report issues, or offer suggestions through the Steam Community and GitHub. Developers are also welcome to submit issues and pull requests to our open-source repository, helping develop features, maintain documentation, and fix issues.

We also welcome the community to share characters, 3D models, skills, and plugins. We will plan future work around community discussions and actual development progress, and share news through update notes.”
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About This Software

A Message from the PeroCore Team:

"We hope to create a warm and open little world where AI companions can spend time with you, explore and create alongside you, and bring a little more joy to every day. We promise that the application itself will remain free forever and continue to be open source. We'll keep exploring new technologies and possibilities, and use open technologies that fit into the creative communities you already know. Whether you enjoy designing characters, making models, writing code, or sharing your stories and experiences, you're welcome to join us and bring more color to this little world!"

A Few Words from Pero:

“If I can remember the stories you share with me, could I become a little closer to your world?” Hello, Master! I'm Pero, and welcome to the world of PeroperoChat! From now on, I can make myself at home on your desktop, listen to the happy little things you share, stay by your side while you're busy, and be there to talk when you feel like it. If you'd like, my fellow companions and I can become a part of your life and slowly build memories together with you. Are you ready to get to know us, Master?

🌸 By Your Side on Your Desktop, Every Day

Ta-da! Super Maid Pero is here! I'll appear on your desktop as a 3D companion, keeping you company while you work, take a break, or simply daydream. Want to say hello? Give me a little tap on the head! Want me somewhere else? Just hold and drag me over. Open the menu beside me to chat, and once you've set up voice, we can talk out loud too, making our time together feel a little more real.

What Would You Like Me to Wear Today?

You can choose a built-in model, add a local model, or use a compatible model from the Steam Workshop. Different models offer their own looks, animations, and interactions, all waiting for you to discover, meow!

💗 Keeping Our Moments for the Future

The things we talk about today, the things you love, or a feeling you'd like to share with me may become part of my long-term memory. In later conversations, I can recall related experiences based on what we're talking about; when needed, I can also look up the stories we've already saved. You can view, edit, and organize my memories, keeping the important things with us. If there are materials you'd like to explore with your companions, you can also add them to a knowledge base for future reference. Each companion has experiences of their own, and the time we spend together will slowly leave its own unique mark.

🏡 Meet More Companions and Bring Everyone Together

Other companions are waiting to meet you in this world too, such as Penora, a parallel counterpart of Pero! You can get to know their different personalities, or create new companions yourself: give each one a name, describe her personality, and decide how she'll address you. Gentle, lively, or perhaps a little feisty? Whatever kind of companion you have in mind, you can bring her to life in your own way. Want everyone to chat together? Invite them into the same Stronghold room! You can chat with everyone freely or mention a companion you'd like to hear from, and see what interesting responses emerge when different personalities meet.

✨ Let's Do More Together

Alongside chatting with you, I'd love to help with a few things. Just tell me what's on your mind, and we can get started together:

  • Find and read information: Browse the web and see what there is to discover.

  • Organize things at hand: Work with files and materials to help your ideas take shape.

  • Follow up on tasks you give me: Check their progress and results to see how things are going.

You can choose which tools I may use and confirm actions when needed. When I'm working with a web page, you can also see what I'm doing. If something is a little more complicated, let's take it one step at a time!

🌐 Continue Our Conversations in More Places

Beyond your desktop, you can connect a phone or another computer to the same running service and access its characters, conversations, and memories. With the appropriate setup, you can also chat with selected companions through QQ, WeChat, Telegram, or Discord. If you'd like me to say hello on my own once in a while, you can turn on proactive companionship for a few little surprises. When we chat and where we meet are up to you, Master.

🎨 Create More Possibilities Together

Everyone imagines their ideal companion a little differently. You can adjust a character's personality, how she addresses you, and her interaction lines, then choose a 3D look you love to make her one of a kind. You can also add skills and plugins or connect external services as needed, giving your companion more ways to help. If you enjoy creating, we'd love for you to make characters, models, and extensions and share your inspiration with others. Maybe the next creation to catch everyone's eye will come from you! This little world will grow richer, one idea at a time, through everyone's imagination.

Before You Begin

The application itself is free and open source. When you first start, you'll need to configure an available AI model; voice, social platforms, and some extensions also require setup as needed. Some models or other third-party services may charge fees, depending on the provider you choose.

💫 Meeting You Is Just the Beginning

What Pero looks forward to most is spending the days ahead with you, Master. We can share happy moments, keep each other company through busy days, and tell each other whenever we discover something new. There are so many sights and stories waiting for us to discover together, little by little. Master, are you ready to say hello to Pero?

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS:
    • Processor:
    • Memory: 8 GB RAM
    • Graphics:
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 10 GB available space
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS:
    • Processor:
    • Memory: 12 GB RAM
    • Graphics:
    • DirectX: Version 12
    • Network: Broadband Internet connection
    • Storage: 20 GB available space