Licences

Last updated: September 16, 2026

zterm, zc and zspawn are proprietary software, all rights reserved. They are built on open-source fonts, icons and libraries, listed here with thanks to their authors. The licence texts ship inside every zterm install.

Bundled fonts and icons

JetBrains Mono, the four faces zterm renders text with. SIL OFL 1.1.
Symbols Nerd Font Mono, the icon and Powerline glyphs. MIT (project licence; glyph sets below).
JuliaMono, the spinner glyphs, shipped as a subset renamed Zestful Spinners as the licence requires. SIL OFL 1.1.
lobe-icons, the agent logos zspawn shows beside a pane. MIT (the collection; the marks belong to their owners).

The Nerd Font face aggregates icon sets that each keep their own terms. Where a set requires attribution, it is given here:

Rust crates

The three binaries link 477 open-source crates between them, grouped here by licence. Where a crate offers a choice, we take it under MIT if that is offered and otherwise under Apache 2.0.

Apache-2.0 OR MIT · 295

aead, ahash, allocator-api2, android-activity, android_system_properties, anstream, anstyle, anstyle-parse, anstyle-query, anstyle-wincon, anyhow, arboard, arrayvec, as-raw-xcb-connection, ash, async-broadcast, async-channel, async-executor, async-io, async-lock, async-process, async-recursion, async-signal, async-task, async-trait, atomic-waker, autocfg, base64, base64ct, bit-set, bit-vec, bitflags, block-buffer, blocking, bumpalo, by_address, cc, cfg-if, chacha20, chacha20poly1305, chrono, cipher, clap, clap_builder, clap_derive, clap_lex, cmov, colorchoice, concurrent-queue, const-oid, cookie, cookie_store, core-foundation, core-foundation-sys, core-graphics, core-graphics-types, cosmic-text, cpufeatures, crc32fast, crossbeam-utils, crypto-common, ctutils, curve25519-dalek-derive, der, deranged, digest, directories, dirs-sys, displaydoc, document-features, downcast-rs, ed25519, either, enumflags2, enumflags2_derive, equivalent, errno, etagere, euclid, event-listener, event-listener-strategy, fallible-iterator, fallible-streaming-iterator, fastrand, fdeflate, find-msvc-tools, fixedbitset, flate2, font-types, foreign-types, foreign-types-macros, foreign-types-shared, form_urlencoded, futures-core, futures-io, futures-lite, futures-task, futures-util, getrandom, gpu-allocator, half, hashbrown, hashlink, heck, hermit-abi, hex, home, http, httparse, hybrid-array, iana-time-zone, iana-time-zone-haiku, ident_case, idna, idna_adapter, indexmap, indoc, inout, is_terminal_polyfill, itertools, itoa, jni, jni-macros, jni-sys, jni-sys-macros, jobserver, js-sys, kasuari, khronos-egl, libc, line-clipping, linebender_resource_handle, litrs, lock_api, log, mac-notification-sys, memmap2, miow, naga, naga-types, ndk, ndk-context, ndk-sys, notify-rust, num-conv, num-traits, num_threads, once_cell, once_cell_polyfill, ordered-stream, palette, palette_derive, palette_math, parking, parking_lot, parking_lot_core, percent-encoding, petgraph, pin-project, pin-project-internal, pin-project-lite, piper, pkcs8, pkg-config, plain, png, polling, pollster, poly1305, portable-atomic, portable-atomic-util, powerfmt, ppv-lite86, presser, proc-macro-crate, proc-macro2, profiling, quote, rand, rand_chacha, rand_core, range-alloc, rangemap, raw-window-metal, read-fonts, regex-automata, regex-syntax, renderdoc-sys, roxmltree, rustc-hash, rustc_version, rustversion, scoped-tls, scopeguard, semver, serde, serde_core, serde_derive, serde_json, serde_repr, serde_spanned, sha2, shlex, signal-hook, signal-hook-mio, signal-hook-registry, signature, simd_cesu8, simdutf8, skrifa, smallvec, smol_str, spki, stable_deref_trait, static_assertions, swash, syn, sys-locale, tauri-winrt-notification, tempfile, thiserror, thiserror-impl, time, time-core, time-macros, toml, toml_datetime, toml_edit, toml_parser, toml_write, toml_writer, ttf-parser, typenum, unicode-bidi, unicode-script, unicode-segmentation, unicode-truncate, unicode-width, universal-hash, ureq, ureq-proto, url, utf8-zero, utf8_iter, utf8parse, uuid, vcpkg, version_check, vte, wasm-bindgen, wasm-bindgen-futures, wasm-bindgen-macro, wasm-bindgen-macro-support, wasm-bindgen-shared, web-sys, web-time, wgpu, wgpu-core, wgpu-core-deps-apple, wgpu-core-deps-emscripten, wgpu-core-deps-windows-linux-android, wgpu-hal, wgpu-naga-bridge, wgpu-types, winapi, winapi-i686-pc-windows-gnu, winapi-x86_64-pc-windows-gnu, windows, windows-collections, windows-core, windows-future, windows-implement, windows-interface, windows-link, windows-numerics, windows-result, windows-strings, windows-sys, windows-targets, windows-threading, windows-version, windows_aarch64_gnullvm, windows_aarch64_msvc, windows_i686_gnu, windows_i686_gnullvm, windows_i686_msvc, windows_x86_64_gnu, windows_x86_64_gnullvm, windows_x86_64_msvc, wl-clipboard-rs, x11rb, x11rb-protocol, yazi, zeno, zeroize

MIT · 100

android-properties, block2, bytes, calloop, calloop-wayland-source, castaway, cfg_aliases, combine, compact_str, convert_case, core_maths, crossterm, crossterm_winapi, crunchy, darling, darling_core, darling_macro, derive_more, derive_more-impl, dispatch, dlib, endi, fontconfig-parser, fontdb, generic-array, harfrust, instability, libm, libredox, libsqlite3-sys, lru, memoffset, mio, nom, objc-sys, objc2, objc2-app-kit, objc2-cloud-kit, objc2-contacts, objc2-core-data, objc2-core-image, objc2-core-location, objc2-encode, objc2-foundation, objc2-link-presentation, objc2-metal, objc2-quartz-core, objc2-symbols, objc2-ui-kit, objc2-uniform-type-identifiers, objc2-user-notifications, orbclient, ordered-float, os_pipe, quick-xml, ratatui, ratatui-core, ratatui-crossterm, ratatui-widgets, redox_syscall, redox_users, rusqlite, sctk-adwaita, simd-adler32, slab, smithay-client-toolkit, strict-num, strsim, strum, strum_macros, synstructure, tracing, tracing-attributes, tracing-core, tree_magic_mini, uds_windows, ulid, wayland-backend, wayland-client, wayland-csd-frame, wayland-cursor, wayland-protocols, wayland-protocols-plasma, wayland-protocols-wlr, wayland-scanner, wayland-sys, winnow, winresource, x11-dl, xcursor, xkbcommon-dl, xml-rs, zbus, zbus_macros, zbus_names, zcheapstr, zmij, zvariant, zvariant_derive, zvariant_utils

Unicode-3.0 · 18

icu_collections, icu_locale_core, icu_normalizer, icu_normalizer_data, icu_properties, icu_properties_data, icu_provider, litemap, potential_utf, tinystr, writeable, yoke, yoke-derive, zerofrom, zerofrom-derive, zerotrie, zerovec, zerovec-derive

Apache-2.0 OR MIT OR Zlib · 14

bytemuck, bytemuck_derive, cursor-icon, dispatch2, glow, glyphon, miniz_oxide, objc2-core-foundation, objc2-core-graphics, objc2-io-surface, raw-window-handle, tinyvec, tinyvec_macros, xkeysym

Apache-2.0 · 13

ab_glyph, ab_glyph_rasterizer, alacritty_terminal, approx, codespan-reporting, gethostname, gl_generator, glutin_wgl_sys, khronos_api, owned_ttf_parser, spirv, unicode-linebreak, winit

MIT OR Unlicense · 6

aho-corasick, memchr, same-file, termcolor, walkdir, winapi-util

Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT · 6

linux-raw-sys, rustix, rustix-openpty, wasi, wasip2, wit-bindgen

BSD-3-Clause · 5

curve25519-dalek, ed25519-dalek, subtle, tiny-skia, tiny-skia-path

BSL-1.0 · 2

clipboard-win, error-code

Zlib · 2

foldhash, slotmap

Apache-2.0 OR BSD-3-Clause OR MIT · 2

num_enum, num_enum_derive

Apache-2.0 OR BSD-2-Clause OR MIT · 2

zerocopy, zerocopy-derive

0BSD OR Apache-2.0 OR MIT · 1

BSD-2-Clause · 1

CC0-1.0 OR Apache-2.0 OR Apache-2.0 WITH LLVM-exception · 1

Apache-2.0 OR CC0-1.0 OR MIT-0 · 1

constant_time_eq

Apache-2.0 AND MIT · 1

Apache-2.0 OR BSD-1-Clause OR MIT · 1

ISC · 1

MPL-2.0 · 1

Apache-2.0 OR LGPL-2.1-or-later OR MIT · 1

Apache-2.0 OR BSL-1.0 · 1

Apache-2.0 OR GPL-2.0-only · 1

(MIT OR Apache-2.0) AND Unicode-3.0 · 1

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Contact

Questions about a licence or an attribution? Email legal@zestful.dev.