Choose the engagement that fits the work. CTI can take a defined product from idea to production, step in for only the stages that need help, or provide an ongoing engineering department that works as part of your business.

• Web platforms, portals, and cloud backends
• Native mobile and desktop applications
• System integrations and workflow automation
• Infrastructure, observability, and deployment
• Quality engineering, security, and analytics
• Technical leadership, training, and mentorship

Tell us what you are building and we'll connect you with a software engineer.

Thureos is CTI's C++ cryptographic library for secure messaging and encrypted applications. Integrate the native C++ core directly as a standalone library, or use the companion Kotlin Multiplatform library to bring Thureos to JVM desktop, Android, iOS, JavaScript, and WebAssembly.

• Standalone C++ core for direct native integration
• Companion Kotlin Multiplatform library for JVM, Android, iOS, JavaScript, and WebAssembly
• OMEMO 2, PQXDH, Double Ratchet, and sender-key group encryption
• ML-KEM hybrid post-quantum key establishment
• AES-256-GCM, Ed25519 signatures, and X25519 sealed boxes
• Encrypted key and session storage with fail-closed runtime checks

Tell us what you are building and we'll connect you with a software engineer.

Kintrel is CTI's free private messenger for Android, iOS, desktop, and the web. Built with Thureos and CTI's Signal Protocol implementation, all messaging, including direct messages, group conversations, and channels, is end-to-end encrypted on the client before it reaches the relay.

• End-to-end encrypted direct messages, groups, and channels
• Linked-device synchronization and device revocation
• Account safety numbers and privacy-aware receipts
• Encrypted attachments, voice notes, and location sharing
• Searchable conversation archives and contact discovery
• Encrypted one-to-one voice and video calling on native clients
• Disappearing messages with automatic expiry
• Sensitive-message envelopes requiring device-level authentication to open

Dromon is CTI's performance-first C++26 framework for modern applications. Its modular foundation spans headless services and REST APIs, interactive desktop, mobile, and browser applications, and server-rendered experiences, with Dromon-owned APIs for application lifecycle, concurrency, networking, data, and presentation.

• Complete application lifecycle, scheduling, policies, and pluggable logging
• Typed web applications, compile-time routes, REST APIs, JSON binding, permissions, and SSR
• Coroutine-based HTTP/1.1, HTTP/2, and HTTP/3 networking with TLS and scalable worker execution
• Asynchronous tasks, timers, thread pools, dispatching, and frame pacing
• Compile-time dependency injection with shared, scoped, and replaceable services
• Strongly typed data, reflection, JSON conversion, reactive state, and signals
• Headless services, native and browser applications, and universal interfaces
• Modular CMake targets, deterministic test hosts, strict warnings, and sanitizers
• Programmatically drivable GUI API for automated interaction and deterministic end-to-end testing
• Stable plugin ABI for extending applications with independently delivered modules

Tell us what you are building and we'll connect you with a software engineer.