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Open-Source Projects
Discover top open-source software, updated regularly with real-world adoption signals.
Discover top open-source software, updated regularly with real-world adoption signals.
Open-source customer engagement and product onboarding automation platform
Multi-channel messaging platform for event-triggered customer engagement. Build visual workflows, segment users, and send personalized push, email, SMS, and webhook campaigns at scale.
Laudspeaker is a customer engagement and product onboarding platform designed for teams who need event-triggered, multi-channel messaging at scale. Built as an alternative to Braze, OneSignal, Customer.io, Appcues, and Pendo, it combines visual journey building with powerful segmentation and personalization capabilities.
The platform centers on a visual journey builder that enables teams to design complex, event-triggered workflows without code. Users can segment audiences by attributes, behaviors, and previous campaign interactions, then orchestrate messages across push notifications, email, SMS, and webhooks. A/B testing and Liquid templating support personalized messaging, while external API calls enable dynamic content customization.
With proven scalability—having delivered over 500 million messages—Laudspeaker is architected for high-volume use cases. The roadmap emphasizes data warehouse integration and modern data stack compatibility, ensuring teams maintain control over their data without vendor lock-in.
Laudspeaker is in public beta, stable for most non-enterprise use cases. The platform continues active development with features like improved mobile push support, enhanced A/B testing, user timezone handling, and data warehouse syncing planned for upcoming releases.
When teams consider Laudspeaker, these hosted platforms usually appear on the same shortlist.
Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.
Product Onboarding Automation
Design multi-step onboarding journeys triggered by user signup events, sending personalized email and push sequences to drive feature adoption and reduce time-to-value.
Re-engagement Campaigns
Segment inactive users based on behavior patterns and trigger targeted SMS, email, or push campaigns to bring them back to complete specific flows or actions.
Event-Triggered Notifications
Build workflows that respond to user actions in real-time, sending transactional messages, milestone celebrations, or contextual nudges across multiple channels.
A/B Testing Message Effectiveness
Create journey variants to test different messaging strategies, channels, and content personalization approaches, optimizing conversion rates based on data.
Laudspeaker currently supports push notifications, email, SMS, and webhooks. Additional channels are on the roadmap as the platform continues development.
The platform has delivered over 500 million messages and currently handles workloads exceeding 10 million users. Support for 100+ million user scale is in active development.
Data warehouse syncing is planned for Q1 2025. The platform is being built with modern data stack compatibility in mind to prevent vendor lock-in.
Laudspeaker is currently in public beta and stable for most non-enterprise use cases. The team is actively working toward production-ready status with ongoing improvements.
You can segment users by attributes, actions they've completed, and even retarget based on previous campaigns they've received and how they interacted with them.
Project at a glance
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