https://www.ospreylang.dev/docs/packages-in-vscode/ https://www.ospreylang.dev/assets/videos/osprey-package-manager-poster.jpg Add and remove Osprey packages in VS Code Browse Osprey packages, review audit warnings, add and verify a dependency, then remove it through the VS Code package workspace. https://www.ospreylang.dev/assets/videos/osprey-package-manager.mp4 48 2026-10-25T21:32:56+11:00 yes no no Osprey VS Code package manager dependencies package registry https://www.ospreylang.dev/docs/tutorials/profiler/ https://www.ospreylang.dev/assets/videos/osprey-profiler-poster.jpg Profiling Osprey in VS Code: CPU, memory and leaks A two-minute video tutorial. Run and profile the open file, read the flame graph and the heat on your source, attach to a program that is already running, then see how Osprey's memory backends work and check a program for leaks with ARC. https://www.ospreylang.dev/assets/videos/osprey-profiler.mp4 120 2026-10-23T15:26:00+11:00 yes no no Osprey profiler CPU profiling flame graph VS Code memory management ARC leak detection https://www.ospreylang.dev/docs/tutorials/swift-interop/ https://www.ospreylang.dev/assets/videos/osprey-swift-interop-poster.jpg Osprey and Swift interop: Mac and iPhone app tutorial A three-minute video tutorial. Osprey exports compile to a C header that Swift calls, Swift @_cdecl functions become Osprey imports, and one Xcode target ships the same app to the Mac and the iPhone. https://www.ospreylang.dev/assets/videos/osprey-swift-interop.mp4 194 2026-10-20T20:32:57+11:00 yes no no Osprey Swift SwiftUI macOS iOS C interop @_cdecl Xcode algebraic effects https://www.ospreylang.dev/docs/proofs/videos/dependent-types/ https://www.ospreylang.dev/assets/videos/osprey-dependent-types-poster.jpg What are dependent types?: for programmers Types can describe facts about values. Start with a list-length example, then watch Osprey check an actual identity proof. This version is for programmers. https://www.ospreylang.dev/assets/videos/osprey-dependent-types.mp4 100 2026-10-30T09:09:08+11:00 yes no no Osprey proofs What are dependent types? programmers https://www.ospreylang.dev/docs/proofs/videos/osprey-proof-kernel/ https://www.ospreylang.dev/assets/videos/osprey-proof-kernel-poster.jpg How Osprey checks a proof: for programmers Follow a statement and its evidence through the proof kernel written in Osprey. This version is for programmers. https://www.ospreylang.dev/assets/videos/osprey-proof-kernel.mp4 109 2026-10-30T09:23:14+11:00 yes no no Osprey proofs How Osprey checks a proof programmers https://www.ospreylang.dev/docs/proofs/videos/proof-workbench/ https://www.ospreylang.dev/assets/videos/osprey-proof-workbench-poster.jpg Meet the proof workbench: for programmers Write a small argument, inspect hypotheses and goals, and complete a guided exercise in the real Workbench. This version is for programmers. https://www.ospreylang.dev/assets/videos/osprey-proof-workbench.mp4 109 2026-10-30T09:15:56+11:00 yes no no Osprey proofs Use the Proof Workbench programmers https://www.ospreylang.dev/docs/proofs/videos/mathlib-bridge/ https://www.ospreylang.dev/assets/videos/osprey-mathlib-bridge-poster.jpg The Mathlib port is already underway: for programmers See selected imported proofs checked in Osprey and learn how the actual Mathlib Euclid import is progressing. This version is for programmers. https://www.ospreylang.dev/assets/videos/osprey-mathlib-bridge.mp4 166 2026-10-30T14:52:02+11:00 yes no no Osprey proofs The Mathlib port is underway programmers https://www.ospreylang.dev/docs/proofs/videos/proofs-that-say-no/ https://www.ospreylang.dev/assets/videos/osprey-proofs-that-say-no-poster.jpg A proof checker must say no: for programmers Compare a valid proof with deliberately corrupted evidence and a false replacement statement. This version is for programmers. https://www.ospreylang.dev/assets/videos/osprey-proofs-that-say-no.mp4 107 2026-10-30T09:10:14+11:00 yes no no Osprey proofs A proof checker must say no programmers https://www.ospreylang.dev/docs/proofs/videos/navier-stokes-proof/ https://www.ospreylang.dev/assets/videos/osprey-navier-stokes-proof-poster.jpg Navier-Stokes: OpenAI's published solution: for programmers Understand OpenAI's published Navier-Stokes solution and Lean formalization, then explore a real Osprey fluid calculation and checked Workbench exercise. This version is for programmers. https://www.ospreylang.dev/assets/videos/osprey-navier-stokes-proof.mp4 138 2026-10-30T15:01:32+11:00 yes no no Osprey proofs Navier-Stokes: computation and proof programmers https://www.ospreylang.dev/docs/proofs/videos/dependent-types-math/ https://www.ospreylang.dev/assets/videos/osprey-dependent-types-math-poster.jpg What are dependent types?: for mathematicians Types can describe facts about values. Start with a list-length example, then watch Osprey check an actual identity proof. This version is for mathematicians. https://www.ospreylang.dev/assets/videos/osprey-dependent-types-math.mp4 106 2026-10-30T09:15:06+11:00 yes no no Osprey proofs What are dependent types? mathematicians https://www.ospreylang.dev/docs/proofs/videos/osprey-proof-kernel-math/ https://www.ospreylang.dev/assets/videos/osprey-proof-kernel-math-poster.jpg Inside a small proof kernel: for mathematicians Follow a statement and its evidence through the proof kernel written in Osprey. This version is for mathematicians. https://www.ospreylang.dev/assets/videos/osprey-proof-kernel-math.mp4 119 2026-10-30T09:27:43+11:00 yes no no Osprey proofs How Osprey checks a proof mathematicians https://www.ospreylang.dev/docs/proofs/videos/proof-workbench-math/ https://www.ospreylang.dev/assets/videos/osprey-proof-workbench-math-poster.jpg The proof workbench: goals and evidence: for mathematicians Write a small argument, inspect hypotheses and goals, and complete a guided exercise in the real Workbench. This version is for mathematicians. https://www.ospreylang.dev/assets/videos/osprey-proof-workbench-math.mp4 110 2026-10-30T09:22:28+11:00 yes no no Osprey proofs Use the Proof Workbench mathematicians https://www.ospreylang.dev/docs/proofs/videos/mathlib-bridge-math/ https://www.ospreylang.dev/assets/videos/osprey-mathlib-bridge-math-poster.jpg Osprey rechecks imported mathematical proofs: for mathematicians See selected imported proofs checked in Osprey and learn how the actual Mathlib Euclid import is progressing. This version is for mathematicians. https://www.ospreylang.dev/assets/videos/osprey-mathlib-bridge-math.mp4 172 2026-10-30T15:08:15+11:00 yes no no Osprey proofs The Mathlib port is underway mathematicians https://www.ospreylang.dev/docs/proofs/videos/proofs-that-say-no-math/ https://www.ospreylang.dev/assets/videos/osprey-proofs-that-say-no-math-poster.jpg Rejection is part of the proof: for mathematicians Compare a valid proof with deliberately corrupted evidence and a false replacement statement. This version is for mathematicians. https://www.ospreylang.dev/assets/videos/osprey-proofs-that-say-no-math.mp4 105 2026-10-30T09:15:48+11:00 yes no no Osprey proofs A proof checker must say no mathematicians https://www.ospreylang.dev/docs/proofs/videos/navier-stokes-proof-math/ https://www.ospreylang.dev/assets/videos/osprey-navier-stokes-proof-math-poster.jpg Navier-Stokes: the published solution, then an exact flow: for mathematicians Understand OpenAI's published Navier-Stokes solution and Lean formalization, then explore a real Osprey fluid calculation and checked Workbench exercise. This version is for mathematicians. https://www.ospreylang.dev/assets/videos/osprey-navier-stokes-proof-math.mp4 145 2026-10-30T15:11:05+11:00 yes no no Osprey proofs Navier-Stokes: computation and proof mathematicians