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2-package comparison
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Measured metrics — each value links to its source.
| Signal | koa | fastify |
|---|---|---|
| Release cadence | 1 release in last 90 days | 0 releases in last 90 days |
| Last release | 57 days ago | 12 days ago |
| Open issues | 18 open issues | 72 open issues |
| Bus factor | top contributor makes 32.89% of commits | top contributor makes 23.15% of commits |
| OpenSSF score | 6/10 | 8.3/10 |
| Vulnerabilities | 0 known vulnerabilities | 0 known vulnerabilities |
| Types | ships TypeScript types | ships TypeScript types |
Daily downloads aggregated to weekly sums (last 5 years).
| Week | koa | fastify |
|---|---|---|
| 2026-07-13 | 4,217,360 | 5,160,297 |
| 2026-07-06 | 7,320,842 | 8,870,813 |
| 2026-06-29 | 7,724,380 | 8,692,877 |
| 2026-06-22 | 8,430,597 | 8,846,595 |
| 2026-06-15 | 7,771,859 | 8,494,515 |
| 2026-06-08 | 8,095,263 | 8,443,087 |
| 2026-06-01 | 6,456,677 | 6,680,071 |
| 2026-05-25 | 7,366,089 | 7,307,661 |
| 2026-05-18 | 8,001,139 | 7,903,679 |
| 2026-05-11 | 6,472,705 | 7,687,311 |
| 2026-05-04 | 7,834,994 | 7,216,004 |
| 2026-04-27 | 7,840,682 | 6,816,536 |
| 2026-04-20 | 7,378,829 | 6,817,648 |
| 2026-04-13 | 6,997,739 | 6,610,291 |
| 2026-04-06 | 6,421,191 | 5,904,710 |
| 2026-03-30 | 6,273,466 | 5,584,564 |
| 2026-03-23 | 6,860,220 | 6,063,055 |
| 2026-03-16 | 6,809,226 | 5,911,199 |
| 2026-03-09 | 6,963,894 | 5,851,072 |
| 2026-03-02 | 6,859,551 | 5,595,109 |
| 2026-02-23 | 6,564,654 | 5,551,320 |
| 2026-02-16 | 5,853,415 | 4,918,036 |
| 2026-02-09 | 6,129,308 | 5,060,688 |
| 2026-02-02 | 6,018,209 | 5,150,074 |
| 2026-01-26 | 5,838,565 | 4,717,377 |
| 2026-01-19 | 5,410,351 | 4,409,155 |
| 2026-01-12 | 5,430,714 | 4,080,726 |
| 2026-01-05 | 4,866,550 | 3,356,668 |
| 2025-12-29 | 2,372,204 | 1,827,003 |
| 2025-12-22 | 2,648,336 | 1,912,088 |
| 2025-12-15 | 5,181,740 | 3,434,742 |
| 2025-12-08 | 5,432,663 | 3,430,749 |
| 2025-12-01 | 5,565,160 | 3,456,396 |
| 2025-11-24 | 4,996,968 | 3,110,385 |
| 2025-11-17 | 5,436,551 | 3,387,906 |
| 2025-11-10 | 5,272,685 | 3,255,233 |
| 2025-11-03 | 5,298,035 | 3,237,536 |
| 2025-10-27 | 5,156,035 | 3,113,179 |
| 2025-10-20 | 5,113,133 | 3,141,670 |
| 2025-10-13 | 4,977,262 | 3,099,453 |
| 2025-10-06 | 4,959,027 | 3,069,376 |
| 2025-09-29 | 4,901,637 | 3,034,493 |
| 2025-09-22 | 4,863,549 | 2,984,361 |
| 2025-09-15 | 4,825,600 | 2,897,246 |
| 2025-09-08 | 4,899,522 | 2,861,728 |
| 2025-09-01 | 4,526,367 | 2,632,734 |
| 2025-08-25 | 4,802,306 | 2,693,947 |
| 2025-08-18 | 4,617,287 | 2,661,648 |
| 2025-08-11 | 4,380,191 | 2,622,505 |
| 2025-08-04 | 4,395,331 | 2,580,012 |
| 2025-07-28 | 4,534,493 | 2,680,620 |
| 2025-07-21 | 4,496,935 | 2,532,623 |
| 2025-07-14 | 4,514,721 | 2,643,913 |
| 2025-07-07 | 4,531,432 | 2,669,991 |
| 2025-06-30 | 4,323,493 | 2,616,251 |
| 2025-06-23 | 4,577,765 | 2,877,226 |
| 2025-06-16 | 4,478,511 | 2,838,174 |
| 2025-06-09 | 4,254,404 | 2,583,001 |
| 2025-06-02 | 4,248,594 | 2,528,451 |
| 2025-05-26 | 3,859,095 | 2,354,496 |
| 2025-05-19 | 4,088,614 | 2,563,782 |
| 2025-05-12 | 4,065,936 | 2,535,492 |
| 2025-05-05 | 3,827,915 | 2,402,975 |
| 2025-04-28 | 3,333,955 | 2,231,758 |
| 2025-04-21 | 3,458,558 | 2,331,600 |
| 2025-04-14 | 3,427,344 | 2,313,100 |
| 2025-04-07 | 3,528,826 | 2,336,747 |
| 2025-03-31 | 3,474,835 | 2,465,727 |
| 2025-03-24 | 3,295,196 | 2,506,193 |
| 2025-03-17 | 3,452,992 | 2,472,315 |
| 2025-03-10 | 3,549,010 | 2,385,286 |
| 2025-03-03 | 3,618,836 | 2,339,301 |
| 2025-02-24 | 3,667,302 | 2,366,090 |
| 2025-02-17 | 3,400,559 | 2,287,919 |
| 2025-02-10 | 3,427,487 | 2,357,206 |
| 2025-02-03 | 3,234,990 | 2,252,655 |
| 2025-01-27 | 3,105,112 | 2,209,570 |
| 2025-01-20 | 2,902,764 | 2,207,559 |
| 2025-01-13 | 2,922,443 | 2,204,574 |
| 2025-01-06 | 2,694,368 | 2,046,843 |
| 2024-12-30 | 1,487,723 | 1,217,352 |
| 2024-12-23 | 1,276,197 | 1,131,517 |
| 2024-12-16 | 2,844,182 | 2,140,694 |
| 2024-12-09 | 2,763,524 | 2,210,252 |
| 2024-12-02 | 2,865,091 | 2,219,157 |
| 2024-11-25 | 2,615,889 | 2,150,573 |
| 2024-11-18 | 3,085,792 | 2,375,570 |
| 2024-11-11 | 2,836,438 | 2,185,858 |
| 2024-11-04 | 2,791,063 | 1,915,681 |
| 2024-10-28 | 2,650,204 | 1,782,631 |
| 2024-10-21 | 2,801,597 | 1,842,860 |
| 2024-10-14 | 2,713,825 | 1,811,614 |
| 2024-10-07 | 2,832,079 | 1,900,170 |
| 2024-09-30 | 2,454,609 | 1,807,907 |
| 2024-09-23 | 2,369,067 | 1,838,351 |
| 2024-09-16 | 2,256,739 | 1,803,715 |
| 2024-09-09 | 2,396,357 | 1,817,143 |
| 2024-09-02 | 2,238,950 | 1,736,702 |
| 2024-08-26 | 2,160,835 | 1,777,248 |
| 2024-08-19 | 2,085,089 | 1,812,390 |
| 2024-08-12 | 2,031,764 | 1,666,085 |
| 2024-08-05 | 2,136,249 | 1,704,875 |
| 2024-07-29 | 1,887,619 | 1,722,693 |
| 2024-07-22 | 1,827,798 | 1,710,940 |
| 2024-07-15 | 1,723,058 | 1,748,344 |
| 2024-07-08 | 1,646,438 | 1,668,083 |
| 2024-07-01 | 1,581,893 | 1,575,879 |
| 2024-06-24 | 1,718,714 | 1,638,813 |
| 2024-06-17 | 1,683,760 | 1,620,336 |
| 2024-06-10 | 1,699,871 | 1,616,854 |
| 2024-06-03 | 1,671,508 | 1,597,128 |
| 2024-05-27 | 1,585,009 | 1,550,710 |
| 2024-05-20 | 1,600,351 | 1,577,890 |
| 2024-05-13 | 1,645,169 | 1,699,037 |
| 2024-05-06 | 1,510,792 | 1,564,646 |
| 2024-04-29 | 1,491,744 | 1,494,048 |
| 2024-04-22 | 1,635,666 | 1,578,856 |
| 2024-04-15 | 1,620,867 | 1,736,957 |
| 2024-04-08 | 1,595,157 | 1,630,921 |
| 2024-04-01 | 1,485,500 | 1,566,697 |
| 2024-03-25 | 1,467,686 | 1,400,956 |
| 2024-03-18 | 1,710,111 | 1,814,590 |
| 2024-03-11 | 1,648,978 | 1,824,010 |
| 2024-03-04 | 1,720,193 | 1,847,527 |
| 2024-02-26 | 1,667,530 | 1,901,535 |
| 2024-02-19 | 1,494,268 | 1,796,443 |
| 2024-02-12 | 1,468,526 | 1,770,096 |
| 2024-02-05 | 1,520,467 | 1,732,937 |
| 2024-01-29 | 1,507,504 | 1,710,280 |
| 2024-01-22 | 1,443,543 | 1,655,753 |
| 2024-01-15 | 1,426,237 | 1,573,421 |
| 2024-01-08 | 1,408,969 | 1,423,645 |
| 2024-01-01 | 1,076,188 | 1,112,993 |
| 2023-12-25 | 704,282 | 744,108 |
| 2023-12-18 | 1,284,358 | 1,250,648 |
| 2023-12-11 | 1,463,240 | 1,463,872 |
| 2023-12-04 | 1,456,660 | 1,407,524 |
| 2023-11-27 | 1,542,698 | 1,423,066 |
| 2023-11-20 | 1,330,161 | 1,339,306 |
| 2023-11-13 | 1,473,475 | 1,366,926 |
| 2023-11-06 | 1,509,800 | 1,399,631 |
| 2023-10-30 | 1,048,517 | 972,652 |
| 2023-10-23 | 1,508,799 | 1,441,149 |
| 2023-10-16 | 1,583,442 | 1,426,736 |
| 2023-10-09 | 1,449,419 | 1,248,851 |
| 2023-10-02 | 1,486,789 | 1,249,630 |
| 2023-09-25 | 1,523,998 | 1,327,942 |
| 2023-09-18 | 1,529,363 | 1,337,542 |
| 2023-09-11 | 1,532,502 | 1,344,880 |
| 2023-09-04 | 1,510,549 | 1,220,168 |
| 2023-08-28 | 1,654,810 | 1,282,977 |
| 2023-08-21 | 1,681,499 | 1,253,624 |
| 2023-08-14 | 1,595,790 | 1,194,179 |
| 2023-08-07 | 1,776,843 | 1,268,026 |
| 2023-07-31 | 1,828,886 | 1,280,600 |
| 2023-07-24 | 1,533,953 | 1,244,803 |
| 2023-07-17 | 1,566,191 | 1,230,490 |
| 2023-07-10 | 1,734,206 | 1,188,501 |
| 2023-07-03 | 1,462,764 | 1,108,278 |
| 2023-06-26 | 1,539,715 | 1,118,218 |
| 2023-06-19 | 1,505,612 | 1,147,820 |
| 2023-06-12 | 1,606,645 | 1,153,397 |
| 2023-06-05 | 1,421,979 | 1,126,533 |
| 2023-05-29 | 1,360,332 | 1,128,375 |
| 2023-05-22 | 1,451,311 | 1,136,082 |
| 2023-05-15 | 1,601,880 | 1,133,076 |
| 2023-05-08 | 1,593,611 | 1,116,569 |
| 2023-05-01 | 1,484,945 | 1,018,079 |
| 2023-04-24 | 1,636,826 | 1,083,277 |
| 2023-04-17 | 1,616,521 | 1,043,205 |
| 2023-04-10 | 1,535,127 | 986,328 |
| 2023-04-03 | 1,422,928 | 934,106 |
| 2023-03-27 | 1,609,143 | 1,033,654 |
| 2023-03-20 | 1,637,347 | 1,065,410 |
| 2023-03-13 | 1,636,444 | 1,023,748 |
| 2023-03-06 | 1,671,486 | 991,150 |
| 2023-02-27 | 1,618,806 | 1,038,482 |
| 2023-02-20 | 1,522,183 | 962,833 |
| 2023-02-13 | 1,606,926 | 974,261 |
| 2023-02-06 | 1,513,567 | 1,050,540 |
| 2023-01-30 | 1,562,700 | 989,040 |
| 2023-01-23 | 1,447,523 | 926,705 |
| 2023-01-16 | 1,391,789 | 874,367 |
| 2023-01-09 | 1,456,528 | 897,240 |
| 2023-01-02 | 1,158,122 | 671,447 |
| 2022-12-26 | 752,073 | 400,656 |
| 2022-12-19 | 1,173,330 | 700,104 |
| 2022-12-12 | 1,446,424 | 872,836 |
| 2022-12-05 | 1,469,255 | 864,131 |
| 2022-11-28 | 1,349,183 | 842,130 |
| 2022-11-21 | 1,200,854 | 787,452 |
| 2022-11-14 | 1,315,584 | 852,964 |
| 2022-11-07 | 1,335,394 | 949,820 |
| 2022-10-31 | 1,311,380 | 861,979 |
| 2022-10-24 | 1,373,391 | 836,683 |
| 2022-10-17 | 1,377,089 | 790,955 |
| 2022-10-10 | 1,317,258 | 728,594 |
| 2022-10-03 | 1,381,076 | 723,150 |
| 2022-09-26 | 1,432,382 | 741,175 |
| 2022-09-19 | 1,364,725 | 709,338 |
| 2022-09-12 | 1,400,506 | 712,906 |
| 2022-09-05 | 1,354,255 | 655,745 |
| 2022-08-29 | 1,428,381 | 696,700 |
| 2022-08-22 | 1,437,419 | 721,753 |
| 2022-08-15 | 1,282,923 | 645,175 |
| 2022-08-08 | 1,328,010 | 619,847 |
| 2022-08-01 | 1,366,362 | 600,270 |
| 2022-07-25 | 1,305,816 | 607,615 |
| 2022-07-18 | 1,133,614 | 692,543 |
| 2022-07-11 | 1,318,022 | 1,774,760 |
| 2022-07-04 | 1,207,439 | 548,492 |
| 2022-06-27 | 1,231,915 | 556,584 |
| 2022-06-20 | 1,224,596 | 548,694 |
| 2022-06-13 | 1,241,151 | 550,332 |
| 2022-06-06 | 1,244,399 | 547,420 |
| 2022-05-30 | 1,231,807 | 538,907 |
| 2022-05-23 | 1,217,298 | 503,478 |
| 2022-05-16 | 1,240,619 | 527,015 |
| 2022-05-09 | 1,240,010 | 507,989 |
| 2022-05-02 | 1,157,782 | 458,235 |
| 2022-04-25 | 1,218,769 | 514,152 |
| 2022-04-18 | 1,094,688 | 439,139 |
| 2022-04-11 | 1,105,503 | 438,248 |
| 2022-04-04 | 1,158,869 | 459,937 |
| 2022-03-28 | 1,163,786 | 458,128 |
| 2022-03-21 | 1,118,778 | 443,524 |
| 2022-03-14 | 1,127,610 | 435,110 |
| 2022-03-07 | 1,169,653 | 432,140 |
| 2022-02-28 | 1,201,059 | 412,636 |
| 2022-02-21 | 1,265,172 | 407,026 |
| 2022-02-14 | 1,348,878 | 423,541 |
| 2022-02-07 | 1,337,343 | 411,077 |
| 2022-01-31 | 1,271,380 | 394,698 |
| 2022-01-24 | 1,255,762 | 390,086 |
| 2022-01-17 | 1,244,902 | 396,375 |
| 2022-01-10 | 1,231,288 | 377,661 |
| 2022-01-03 | 1,063,894 | 318,231 |
| 2021-12-27 | 744,515 | 231,466 |
| 2021-12-20 | 968,147 | 320,013 |
| 2021-12-13 | 1,168,079 | 427,469 |
| 2021-12-06 | 1,255,502 | 375,835 |
| 2021-11-29 | 1,319,364 | 362,650 |
| 2021-11-22 | 1,179,401 | 307,303 |
| 2021-11-15 | 1,215,142 | 343,234 |
| 2021-11-08 | 1,232,942 | 355,841 |
| 2021-11-01 | 1,189,103 | 296,738 |
| 2021-10-25 | 1,275,223 | 308,666 |
| 2021-10-18 | 1,257,658 | 309,353 |
| 2021-10-11 | 1,183,972 | 283,097 |
| 2021-10-04 | 1,241,338 | 289,035 |
| 2021-09-27 | 1,231,031 | 296,870 |
| 2021-09-20 | 1,174,235 | 287,844 |
| 2021-09-13 | 1,117,340 | 274,753 |
| 2021-09-06 | 1,086,939 | 254,810 |
| 2021-08-30 | 1,104,875 | 263,574 |
| 2021-08-23 | 1,017,922 | 259,705 |
| 2021-08-16 | 917,342 | 246,989 |
| 2021-08-09 | 910,592 | 249,371 |
| 2021-08-02 | 880,607 | 262,338 |
| 2021-07-26 | 871,155 | 247,681 |
| 2021-07-19 | 859,058 | 235,078 |
| 2021-07-12 | 43,549 | 11,656 |