UPDATE YEAR
Crates last updated in 2021
The 872 crates in this directory whose own rendered Last-updated date falls in 2021.
Data as of 2026-07-25 (crates.io database dump, timestamp 2026-07-25T02:00:36Z). Source: crates.io · db-dump.tar.gz · methodology & corrections.
872 crates last updated in 2021
adler2021
aes-ctr2021
aes-soft2021
aesni2021
affinity2021
afpacket2021
agnostik2021
aliasable2021
aliasable_deref_trait2021
aligned-array2021
aliri_clock2021
aliri_traits2021
android-properties2021
anomaly2021
anymap22021
app_dirs2021
ar2021
arc-interner2021
archiver-rs2021
ark-nonnative-field2021
arrayfire2021
as-slice2021
ashmem2021
aspect2021
assert_matches2021
assert_no_alloc2021
async-attributes2021
async-oncecell2021
async-oneshot2021
async-session2021
async-sse2021
async_fn_traits2021
async_ftp2021
async_io_stream2021
async_once2021
atelier_assembler2021
atelier_core2021
atelier_json2021
atelier_smithy2021
atelier_test2021
atomic-shim2021
atomicbox2021
atomicring2021
audiopus2021
audiopus_sys2021
audrey2021
auto_enums_core2021
auto_enums_derive2021
auto_ops2021
automap2021
avro-rs2021
backoff2021
bae2021
barrel2021
base582021
base912021
bb8-diesel2021
bcc-sys2021
bdk-macros2021
benfred-read-process-memory2021
bevy_wgpu2021
binary-merge2021
binfarce2021
binread2021
binread_derive2021
bitstruct2021
bitstruct_derive2021
blake2021
blake-hash2021
block-cipher-trait2021
block_on_proc2021
bloom-filters2021
bmrng2021
boolean_expression2021
bracket2021
broker2021
bs622021
build-env2021
build-parallel2021
build_const2021
builder-pattern2021
byteordered2021
bytesstr2021
bytestream2021
bzip2-rs2021
c2-chacha2021
c_str_macro2021
cache_control2021
cargo-deadlinks2021
cargo-emit2021
cargo-out-dir2021
cast2021
cauchy2021
cdr2021
cdrs2021
cexpr2021
cgmath2021
change-detection2021
checksums2021
chess2021
chiapos-chacha82021
choice2021
chrony-candm-derive2021
civet2021
cjson2021
claim2021
close_fds2021
cni-plugin2021
colored-diff2021
com2021
com_macros2021
com_macros_support2021
comma2021
commitlog2021
compile-time-run2021
concat-arrays2021
concolor-control2021
concurrent_lru2021
conduit2021
conduit-mime-types2021
configure_me2021
conqueue2021
console_error_panic_hook2021
const-default2021
const-default-derive2021
controlled-option2021
controlled-option-macros2021
core_detect2021
cosmwasm-bignumber2021
cpuid-bool2021
cron_clock2021
crusty-core2021
crypto-hashes2021
crypto-mac2021
crypto_api_chachapoly2021
csfml-audio-sys2021
csfml-graphics-sys2021
csfml-system-sys2021
csfml-window-sys2021
cstr-argument2021
ct-logs2021
ctrlc-async2021
cty2021
cucumber_rust2021
cucumber_rust_codegen2021
curve25519-dalek-fiat2021
curve25519-dalek-ng2021
cust_raw2021
custom_error2021
cw02021
dasp_window2021
datadog-logs2021
datetime2021
dbus-tree2021
debug_tree2021
debugit2021
decimal2021
deepsize_derive2021
defer-lite2021
deflate2021
delay2021
dencode2021
der-oid-macro2021
derivative2021
derive-error2021
detour2021
devx-cmd2021
devx-pre-commit2021
diffus2021
dirs-sys-next2021
divrem2021
do-notation2021
docopt2021
dotenv-parser2021
downcast2021
drawille2021
drm-fourcc2021
drop_bomb2021
drop_guard2021
drop_struct_macro_derive2021
dup-crypto2021
dyer-macros2021
dyn_partial_eq_derive2021
dynfmt2021
easy-error2021
ed25519-dalek-fiat2021
electron-hardener2021
elf-utilities2021
embed-doc-image2021
embedded-crc-macros2021
embedded-time2021
emoji2021
enquote2021
enum-display-derive2021
enum-kinds2021
enum-repr-derive2021
enum_to_enum2021
enum_to_enum_derive2021
envy2021
errno-dragonfly2021
escaper2021
eth2_hashing2021
eth2_serde_utils2021
eth2_ssz_derive2021
eth2_ssz_types2021
ethabi-contract2021
ethabi-derive2021
euc2021
event-listener-primitives2021
exa2021
expanduser2021
external-memory2021
faker_rand2021
fast-float2021
fast-srgb82021
fetch_unroll2021
ff-cl-gen2021
fff2021
fff_derive2021
ffi-opaque2021
ffi-support2021
ffi_helpers2021
ffmpeg-sys2021
fil-ocl2021
fil-ocl-core2021
file-mode2021
find_cuda_helper2021
findshlibs2021
fixed_ring_buffer2021
flatk2021
flatk-derive2021
flex-error2021
float-ord2021
float-pretty-print2021
fltk-derive2021
fluid-let2021
fluvio-command2021
fluvio-helm2021
fluvio-test-derive2021
fluvio-wasm-timer2021
fluvio_ws_stream_wasm2021
font8x82021
format-bytes2021
format-bytes-macros2021
format_serde_error2021
forward_ref2021
forwarded-header-value2021
fp_rust2021
framebuffer2021
fruity__bbqsrc2021
fs-swap2021
fs_util2021
fslock2021
fst2021
fstrings2021
fstrings-proc-macro2021
ftdi2021
futures-micro2021
futures-retry2021
futures012021
gag2021
garcon2021
generic_error2021
genpdf2021
geometry-predicates2021
get-port2021
gfapi-sys2021
gfx-auxil2021
gfx-backend-dx112021
gfx-backend-dx122021
gfx-backend-empty2021
gfx-backend-gl2021
gfx-backend-metal2021
gfx-backend-vulkan2021
gfx-hal2021
gfx-renderdoc2021
gherkin_rust2021
gir-format-check2021
git_rev2021
gitlab_clippy2021
glibc_version2021
global_counter2021
glsl-layout-derive2021
go-parse-duration2021
gouth2021
groupy2021
grpc-compiler2021
gtk-macros2021
gtmpl2021
gtmpl_derive2021
gtmpl_value2021
gzlib2021
handle2021
harfbuzz_rs2021
harsh2021
hash32-derive2021
hasher2021
hdf52021
hdf5-derive2021
hdf5-src2021
hdf5-sys2021
hdf5-types2021
hex2021
hexf2021
hexf-parse2021
historian2021
hnsw2021
holochain_json_api2021
holochain_json_derive2021
http-types2021
hxdmp2021
hyper-proxy2021
hyperx2021
hyphenation2021
hyphenation_commons2021
hytra2021
iai2021
iced_web2021
id_tree2021
ifmt2021
ifmt-impl2021
img_hash2021
include-flate-codegen-exports2021
include_dir_impl2021
indent2021
indent_write2021
index-map2021
inplace-vec-builder2021
input_buffer2021
internet-checksum2021
intertrait2021
intertrait-macros2021
intervaltree2021
inventory-impl2021
io-close2021
io_tee2021
ip_network2021
ip_network_table2021
ipsec-parser2021
is_close2021
iter-set2021
itoap2021
jackiechan2021
jrsonnet-gc2021
jrsonnet-gc-derive2021
json-decode2021
json_dotpath2021
json_typegen_shared2021
jsonl2021
jsonpath_lib2021
jsonref2021
jsonrpc-client-transports2021
jsonrpc-core2021
jsonrpc-core-client2021
jsonrpc-derive2021
jsonrpc-http-server2021
jsonrpc-ipc-server2021
jsonrpc-pubsub2021
jsonrpc-server-utils2021
jsonrpc-stdio-server2021
jsonrpc-tcp-server2021
jsonrpc-ws-server2021
jsonrpc_client2021
jsonrpsee-utils2021
jsonxf2021
jumphash2021
keytar2021
keytar-sys2021
kvdb-web2021
lab2021
laminar2021
language-tags2021
lapacke2021
legion2021
legion_codegen2021
lenient_semver2021
lenient_semver_parser2021
lenient_semver_version_builder2021
lenient_version2021
lerp_derive2021
lev_distance2021
leveldb-sys2021
levenshtein2021
levenshtein_automata2021
lewton2021
libquickjs-sys2021
libsecp256k1-core2021
libsecp256k1-gen-ecmult2021
libsecp256k1-gen-genmult2021
libsodium-sys2021
libtor-derive2021
libudev2021
lifetimed-bytes2021
linkcheck2021
liveterm2021
log-ndc2021
log-reroute2021
loopdev2021
lru_time_cache2021
lsp-codec2021
lspower2021
lspower-macros2021
luhn32021
luks22021
lyon_svg2021
magic_string2021
maglev2021
mailslurp2021
main_error2021
mallocator2021
matrixcompare2021
maud_htmlescape2021
mdns2021
meio2021
meio-connect2021
meio-protocol2021
merlin2021
meshx-derive2021
metaplex-token-metadata2021
metaplex-token-vault2021
metrix2021
mini-redis2021
minify2021
minimal-lexical2021
mio-anonymous-pipes2021
miracl_core2021
mirai-annotations2021
mit-build-tools2021
mmapio2021
mocktopus_macros2021
modular-bitfield-msb2021
modular-bitfield-msb-impl2021
moka-cht2021
mousse2021
mp4ameta_proc2021
mpmc2021
mqttbytes2021
mqttrs2021
multipart2021
multiparty2021
mur32021
my-iot2021
nacl2021
naive-timer2021
nakadion2021
nats_test_server2021
nb-connect2021
ndarray_einsum_beta2021
ndk-macro2021
near-runtime-utils2021
neo-mime2021
neo-mime-parse2021
netaddr22021
netbios-parser2021
nipper2021
nlprule2021
nlprule-build2021
nng2021
no-std-net2021
nohash2021
nom-leb1282021
nom-regex2021
nonzero_ext2021
nonzero_lit2021
noop-waker2021
noted2021
noxious2021
nphysics2d2021
nphysics3d2021
ntp-parser2021
null-terminated2021
numeric_literals2021
oak2021
oauth-credentials2021
odbc-safe2021
odht2021
olm-rs2021
oneline-eyre2021
open-metrics-client2021
open-metrics-client-derive-text-encode2021
openat2021
openpty2021
openssl-errors2021
opentls2021
ordered-map2021
paired2021
pallet-finality-tracker2021
pancurses2021
panic-message2021
parity-crypto2021
parity-multiaddr2021
parity-tokio-ipc2021
parity-ws2021
parquet-format2021
parse_duration2021
partial_ref2021
partial_ref_derive2021
partition2021
path-matchers2021
path_abs2021
pcg-mwc2021
pcg_rand2021
pdqselect2021
peeking_take_while2021
pep4402021
percent-encoding-rfc39862021
perlin2d2021
peroxide-ad2021
pest_consume_macros2021
pharos2021
php_serde2021
pin-weak2021
piston-ai_behavior2021
piston-float2021
piston-graphics_api_version2021
piston_meta2021
pistoncore-input2021
polonius-engine2021
portpicker2021
posish2021
posixmq2021
postcard-cobs2021
postgis2021
pp-rs2021
pre2021
pre-proc-macro2021
pretty_dtoa2021
print-nanny-client2021
proc-macro-hack-impl2021
proc-macro-id2021
proc-macro-nested2021
proc-quote2021
proc-status2021
proconio-derive2021
procout2021
project-root2021
prometheus-static-metric2021
proptest-recurse2021
prost-serde2021
proteus2021
protoc-rust-grpc2021
proxy-protocol2021
psl-codegen2021
psl-lexer2021
pulsectl-rs2021
pwhash2021
pwned2021
py_literal2021
python27-sys2021
quad-alsa-sys2021
queen2021
quick-error2021
quick-js2021
r2d2-memcache2021
r2d2_redis2021
ra_ap_arena2021
ra_ap_assists2021
ra_ap_ssr2021
racer-cargo-metadata2021
raii-counter2021
rants2021
rdxl2021
read-progress-stream2021
read_input2021
readwrite2021
rectangle-pack2021
redo2021
reductive2021
ref_slice2021
ref_thread_local2021
regex_static2021
regex_static_impl2021
regex_static_macro2021
rental2021
reopen2021
residua-zigzag2021
reusable-box-future2021
rill-protocol2021
ripemd1602021
ripemd3202021
ritelinked2021
rls-data2021
rls-span2021
robotstxt2021
rose_tree2021
rosrust_codegen2021
round2021
route-recognizer2021
routerify2021
rpmalloc2021
rrs-lib2021
rsa-der2021
rsa-export2021
rsgenetic2021
rsix2021
rspec2021
rtic-core2021
rtic-monotonic2021
rtp-rs2021
rust-bigint2021
rust-fuzzy-search2021
rust-gmp-kzen2021
rustacuda2021
rustc-ap-rustc_arena2021
rustc-ap-rustc_ast2021
rustc-ap-rustc_ast_passes2021
rustc-ap-rustc_ast_pretty2021
rustc-ap-rustc_attr2021
rustc-ap-rustc_data_structures2021
rustc-ap-rustc_errors2021
rustc-ap-rustc_expand2021
rustc-ap-rustc_feature2021
rustc-ap-rustc_fs_util2021
rustc-ap-rustc_graphviz2021
rustc-ap-rustc_index2021
rustc-ap-rustc_lexer2021
rustc-ap-rustc_lint_defs2021
rustc-ap-rustc_macros2021
rustc-ap-rustc_parse2021
rustc-ap-rustc_serialize2021
rustc-ap-rustc_session2021
rustc-ap-rustc_span2021
rustc-ap-rustc_target2021
rustorm2021
rusty_v82021
rutie-serde2021
rweb2021
rweb-macros2021
rweb-openapi2021
sabre-sdk2021
safer-bytes2021
saffron2021
salsa20-core2021
samplerate2021
sapp-wasm2021
sass-sys2021
sc-light2021
sc-transaction-graph2021
scaling2021
scan_fmt2021
schemafy2021
schemafy_core2021
schemafy_lib2021
scoped-env2021
scram2021
sea-strum2021
sea-strum_macros2021
seahash2021
sec2021
sec1_decode2021
secular2021
sedregex2021
segments2021
serde-diff2021
serde-diff-derive2021
serde-transcode2021
serde_bare2021
serde_bytes_base642021
serde_cbor2021
serde_dynamodb2021
serde_merge2021
serde_url_params2021
serpapi-search-rust2021
sfml-build2021
shaku_derive2021
shardio2021
sharks2021
shiplift2021
shuffling-allocator2021
simple-eyre2021
simple-xml-builder2021
simple_proxy2021
simple_xml_serialize2021
single-instance2021
skip_error2021
skulpin2021
slack-blocks2021
slices2021
slip102021
slip10_ed255192021
slog-atomic2021
slog-journald2021
slog-syslog2021
slyce2021
small-ord-set2021
smbus-pec2021
smolset2021
smt2parser2021
sn_data_types2021
sn_fake_clock2021
sn_messaging2021
sn_routing2021
snailquote2021
snake_case2021
snekdown2021
sodiumoxide2021
solana-budget-program2021
solana-failure-program2021
solana-noop-program2021
solana-ownable2021
solana-ramp-tps2021
solana-stake-monitor2021
solana-stake-o-matic2021
solana-vest-program2021
solana-vote-signer2021
solvent2021
soup2021
sourcefile2021
sp-allocator2021
sp-chain-spec2021
sp-finality-tracker2021
sp-npos-elections-compact2021
sp-tasks2021
sp-utils2021
spirv_cross2021
spirv_headers2021
ssh-parser2021
stable-eyre2021
stable-pattern2021
stack-buf2021
statest2021
static_dir2021
stats-cli2021
status-line2021
std-embedded-time2021
stopwatch22021
streamcatcher2021
stripmargin2021
strong2021
strong-xml2021
strong-xml-derive2021
structopt-derive2021
subslice2021
substrate-bn2021
substring2021
subtle-ng2021
sudo2021
surf2021
svgfilters2021
sys-info2021
ta2021
tagptr2021
tap2021
tbc2021
temptree2021
terminal-link2021
terminal-supports-emoji2021
terra-cosmwasm2021
test-assembler2021
test-env-log2021
tetsy-util-mem2021
thread-tree2021
tide2021
tide-rustls2021
tide-testing2021
tide-websockets2021
time-humanize2021
time-macros-impl2021
timing2021
tin-summer2021
tini2021
tiny-hderive2021
tinystr-raw2021
tinytemplate2021
to_method2021
tokio-byteorder2021
tokio-compat-022021
tokio-fd2021
tokio-pg-mapper2021
tokio-pg-mapper-derive2021
tokio-rayon2021
tokio-socketcan2021
tokio_env2021
tokio_env_macro2021
tonic_include_protos2021
topo_sort2021
tor-hash-passwd2021
torut2021
tower-test2021
toxiproxy_rust2021
tracing-distributed2021
tracing-flame2021
tracing-futures2021
tracing-wasm2021
trawler2021
tree-sitter-traversal2021
trees2021
triehash2021
trilean2021
triple_accel2021
try-partialord2021
tuple_list2021
tuple_utils2021
twilio-async2021
twoway2021
type_hash2021
type_hash_core2021
type_hash_macros2021
tzfile2021
uint-crate2021
uname-rs2021
unicode_reader2021
unified-diff2021
unix_path2021
unsafe-io2021
unsize2021
untrusted2021
unwind_safe2021
ursa2021
utf-82021
utf16_lit2021
uwuify2021
v_escape_derive2021
vcell2021
vcpkg2021
vcr-cassette2021
vcsgraph2021
vec-arena2021
vec-collections2021
vector3d2021
vectorize2021
visible2021
vk-sys2021
volatile-mem2021
vorbis-sys2021
vpp-api-message2021
wasm-bindgen-webidl2021
wasm-rs-async-executor2021
wasm-rs-dbg2021
wasmer-engine-jit2021
wasmer-engine-native2021
wasmer-runtime-near2021
wasmer_enumset2021
wasmer_enumset_derive2021
wasmtime-debug2021
wasmtime-obj2021
wasmtime-profiling2021
wchar-impl2021
web-view2021
web3-async-native-tls2021
webview-sys2021
webview22021
webview2-sys2021
weighted-rs2021
wepoll-ffi2021
windows-acl2021
windows-permissions2021
winres2021
winrt2021
wit-walrus2021
witx2021
woothee2021
workspace-hack2021
wraptest2021
wslpath2021
wtf82021
wtns-file2021
www-authenticate2021
x25519-dalek-fiat2021
x25519-dalek-ng2021
x5092021
xcb-util2021
xmldecl2021
xmlrpc2021
xorfilter-rs2021
yaml-front-matter2021
yaml-rust2021
yastl2021
yew-router-route-parser2021
yewtil2021
z3tracer2021
zoneinfo_compiled2021