This project includes code adapted from various permissively licensed sources.

Below is a list of derived works, their origins, and relevant modifications. See the linked modifications for detailed changes.

MIT OR Apache-2.0 licenses

cfg-if by Alex Crichton, as the cfg-if macro.
const_list by Douglas Dwyer, as the ConstList struct.
crossbeam-utils by The Crossbeam Project Developers, as the CacheAlign struct (modifications).
etcetera by Luna Razzaghipour, as the AppEnv trait and related structs (modifications).
fmtor by Tyler Ruckinger, as ExtOption's fmt_or, fmt_or_else and fmt_or_empty methods.
fxhash by Christopher Breeden, as the HasherFx struct (modifications).
no_std_io|core2 by Brendan Molloy, as part of the sys::io module (modifications).
numtoa by Michael Murphy, as the NumToStr trait (modifications).
pollster by Joshua Barretto, as the ExtFuture::block_on method (modifications).
quickdiv by Darko Trifunovski, as the Divisor struct (modifications).
stack_dst by John Hodge, as the data::dst module (modifications).
stated-scope-guard by EvianZhang, as part the ScopeGuard struct (modifications).
static_assertions by Nikolai Vazquez, as part of the const_assert macro and the ConstBool trait (modifications).
tailcall-chunk by Tushar Mathur, as the VecChunk struct (modifications).
tupl by Dragoteryx, as part of the Tuple trait (modifications).

MIT licenses

const_for by Joachim Enggård Nebel, as the cfor macro.
crunchy by Eira Fransham, as the unroll macro (modifications).
encode by Altair Bueno, as the data::codec::encode module (modifications).
icy_sixel by Mike Krüger, based on libsixel by Hayaki Saito, as the media::image::sixel module (modifications).
object-id by Altertech, as part of the IdPinBox and IdPin structs (modifications).
rawbytes by Frank Denis, as Mem's as_bytes and as_bytes_mut methods.
unsized-stack by storycraft, as the FatPtr struct.

8bit_rng by Edward Rosten, (BSD-2), as the Xyza8a and Xyza8b structs algorithms.
apply by GeorgeBurton (Unlicense), as part of the Chain and Hook structs.
blit-fonts by Andrew Reece (ISC), as the FONT_3_5 and FONT_5_6 consts data.
jiff by Andrew Gallant (Unlicense), as the TimeDelta struct (modifications).
pengyhash by Alberto Fajardo (BSD-2), as the HasherPengy struct algorithm ([modifications][M_pengyhash]).
size_of_trait byt Joshua Nelson (BSD-3), as the size_of_expr fn.
Xabc by EternityForest (openly shared), as the Xabc struct algorithm.
Graphics Gems (1985–1994) (permissive EULA), as various algorithms.