Bring agents to all the interfaces people already use
Nobody is going to download an app or visit a website to use your agent. Spectrum is an open-source framework that connects your agents to iMessage, Telegram, WhatsApp, and other interfaces people use every day, using one unified API. Your agent sends one message, Spectrum handles the formatting, delivery, and platform-specific logic natively, in under 1 second. Spectrum is free to start. Scale to Pro or Enterprise when you're ready.
Hi everyone, Julie here from the Photon team, the team behind Spectrum.
Spectrum started as our own pain. Building agents on iMessage, WhatsApp, and other messaging apps, we kept running into the same thing: the agent part is mostly solved, but the plumbing around it isn't. Delivery reliability, platform quirks, rate limits, content that renders beautifully on one channel and looks broken on another - that's where the days go.
We figured anyone putting an agent into a messaging app will hit the same wall, so we pulled that layer out, hardened it, and are open-sourcing it as Spectrum: sub-second latency, adaptive rendering across iMessage, WhatsApp, Telegram, Slack, Discord, Instagram and more, with monitoring and human-in-the-loop built in.
We think the next wave of agents lives in messaging, not dashboards. Would love to hear what you think, especially if you're building in this space!
About Spectrum on Product Hunt
“Bring agents to all the interfaces people already use”
Spectrum launched on Product Hunt on April 21st, 2026 and earned 122 upvotes and 13 comments, placing #6 on the daily leaderboard. Nobody is going to download an app or visit a website to use your agent. Spectrum is an open-source framework that connects your agents to iMessage, Telegram, WhatsApp, and other interfaces people use every day, using one unified API. Your agent sends one message, Spectrum handles the formatting, delivery, and platform-specific logic natively, in under 1 second. Spectrum is free to start. Scale to Pro or Enterprise when you're ready.
On the analytics side, Spectrum competes within Messaging, Open Source, GitHub and iMessage Apps — topics that collectively have 184.3k followers on Product Hunt. The dashboard above tracks how Spectrum performed against the three products that launched closest to it on the same day.
Who hunted Spectrum?
Spectrum was hunted by Zac Zuo. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Spectrum including community comment highlights and product details, visit the product overview.
Zac Zuo