AI Index / Self-hosted applicant tracking systems / History

Self-hosted applicant tracking systems — AI Recommendation History

What AI assistants recommended for self-hosted applicant tracking systems, date by date. Every ranking we publish is frozen the day it publishes, so this is a record of what was said — not a re-computation of what today's data would say about the past.

Record: 26 dated snapshots · Aug 14, 2026 – Sep 8, 2026

Answer archive Methodology Data studies JSON

What changed

Computed by comparing each dated snapshot with the one before it. Share moves smaller than 1pp are treated as noise and left out — the same threshold that suppresses trend arrows on the ranking.

Sep 8, 2026vs Sep 7, 2026

▲ INRabbitHR entered the top 10 (#11 → #9)
▼ OUTMySQL left the top 10 (#10 → #11)
▲OrangeHRM moved #8 → #4
▼Docker moved #5 → #8
▼Reqcore moved #3 → #5
▲RabbitHR moved #11 → #9
▲ERPNext moved #4 → #3
▲Odoo moved #7 → #6
▼Horilla moved #6 → #7
▼PostgreSQL moved #9 → #10
▼MySQL moved #10 → #11
▲Recruitment +9.3pp (51.4% → 60.7%)
▼Reqcore -8.2pp (45.7% → 37.5%)
▲RabbitHR +6.4pp (25.7% → 32.1%)
▲OrangeHRM +5.8pp (37.1% → 42.9%)
▼Docker -5pp (37.1% → 32.1%)
▲OpenCATS +4.6pp (68.6% → 73.2%)
▼PostgreSQL -3.9pp (34.3% → 30.4%)
▼MySQL -3.6pp (28.6% → 25%)
▲ERPNext +1.7pp (42.9% → 44.6%)
▼Horilla -1.4pp (37.1% → 35.7%)

Sep 7, 2026vs Sep 6, 2026

Methodology change: extraction rules 5-7 → 7 between these dates. Differences below may reflect the rule change rather than a change in what AI recommends — see the methodology changelog.

▼Odoo moved #5 → #7
▲Docker moved #6 → #5
▲Horilla moved #7 → #6
▲OrangeHRM moved #9 → #8
▼PostgreSQL moved #8 → #9
▲OrangeHRM +6.1pp (31% → 37.1%)
▲ERPNext +4.8pp (38.1% → 42.9%)
▲MySQL +4.8pp (23.8% → 28.6%)
▲Reqcore +2.8pp (42.9% → 45.7%)
▲Docker +1.4pp (35.7% → 37.1%)
▲Horilla +1.4pp (35.7% → 37.1%)
▼Recruitment -1pp (52.4% → 51.4%)
▼Odoo -1pp (38.1% → 37.1%)
▲PostgreSQL +1pp (33.3% → 34.3%)

Sep 6, 2026vs Sep 5, 2026

▲ INMySQL entered the top 10 (#12 → #10)
▼ OUTRabbitHR left the top 10 (#10 → #11)
▲Odoo moved #8 → #5
▼OrangeHRM moved #6 → #9
▼Docker moved #4 → #6
▲Horilla moved #9 → #7
▲MySQL moved #12 → #10
▲ERPNext moved #5 → #4
▼PostgreSQL moved #7 → #8
▼RabbitHR moved #10 → #11
▲Horilla +7.1pp (28.6% → 35.7%)
▲Odoo +6.4pp (31.7% → 38.1%)
▼OpenCATS -5.6pp (74.6% → 69%)
▼Recruitment -4.7pp (57.1% → 52.4%)
▲MySQL +3.2pp (20.6% → 23.8%)
▼Docker -2.4pp (38.1% → 35.7%)
▼RabbitHR -2.4pp (23.8% → 21.4%)
▼OrangeHRM -2.3pp (33.3% → 31%)
▲PostgreSQL +1.6pp (31.7% → 33.3%)
▼Reqcore -1.5pp (44.4% → 42.9%)

Sep 5, 2026vs Sep 4, 2026

No change above the noise floor.

Sep 4, 2026vs Sep 3, 2026

No change above the noise floor.

Sep 3, 2026vs Sep 2, 2026

No change above the noise floor.

Sep 2, 2026vs Sep 1, 2026

No change above the noise floor.

Sep 1, 2026vs Aug 31, 2026

No change above the noise floor.

Aug 31, 2026vs Aug 30, 2026

No change above the noise floor.

Aug 30, 2026vs Aug 29, 2026

No change above the noise floor.

Aug 29, 2026vs Aug 28, 2026

No change above the noise floor.

Aug 28, 2026vs Aug 27, 2026

No change above the noise floor.

Aug 27, 2026vs Aug 26, 2026

Methodology change: extraction rules 4-7 → 5-7 between these dates. Differences below may reflect the rule change rather than a change in what AI recommends — see the methodology changelog.

▲ERPNext moved #6 → #5
▼OrangeHRM moved #5 → #6
▼OrangeHRM -5.7pp (39% → 33.3%)
▼Recruitment -2.6pp (59.7% → 57.1%)
▼Horilla -2.6pp (31.2% → 28.6%)
▼RabbitHR -2.2pp (26% → 23.8%)
▼Reqcore -1.1pp (45.5% → 44.4%)

Aug 26, 2026vs Aug 25, 2026

No change above the noise floor.

Aug 25, 2026vs Aug 24, 2026

No change above the noise floor.

Aug 24, 2026vs Aug 23, 2026

No change above the noise floor.

Aug 23, 2026vs Aug 22, 2026

▲Docker moved #5 → #4
▼OrangeHRM moved #4 → #5
▲PostgreSQL moved #8 → #7
▼Odoo moved #7 → #8
▼OrangeHRM -2.8pp (41.8% → 39%)
▲ERPNext +2.5pp (35.2% → 37.7%)
▼Docker -1.7pp (40.7% → 39%)

Aug 22, 2026vs Aug 21, 2026

▼Odoo -2.7pp (35.7% → 33%)
▲RabbitHR +1.8pp (23.5% → 25.3%)
▲PostgreSQL +1.3pp (30.6% → 31.9%)
▲Horilla +1.3pp (30.6% → 31.9%)
▲Recruitment +1.2pp (59.2% → 60.4%)
▲OrangeHRM +1pp (40.8% → 41.8%)

Aug 21, 2026vs Aug 20, 2026

▼OrangeHRM -2.1pp (42.9% → 40.8%)
▼Docker -2pp (41.8% → 39.8%)
▼RabbitHR -1.8pp (25.3% → 23.5%)
▼Reqcore -1.4pp (47.3% → 45.9%)
▼OpenCATS -1.3pp (75.8% → 74.5%)

Aug 20, 2026vs Aug 19, 2026

Methodology change: extraction rules 4-5 → 4-7 between these dates. Differences below may reflect the rule change rather than a change in what AI recommends — see the methodology changelog.

▲ INRabbitHR entered the top 10 (#11 → #10)
▼ OUTFreeATS left the top 10 (#10 → #12)
▼FreeATS moved #10 → #12
▲ERPNext moved #7 → #6
▼Odoo moved #6 → #7
▲RabbitHR moved #11 → #10
▼FreeATS -5.6pp (25.4% → 19.8%)
▲ERPNext +4.6pp (31.7% → 36.3%)
▼Recruitment -4.2pp (63.5% → 59.3%)
▲RabbitHR +3.1pp (22.2% → 25.3%)
▲Horilla +2.7pp (27% → 29.7%)
▼OpenCATS -2pp (77.8% → 75.8%)
▲Odoo +1.4pp (34.9% → 36.3%)
▲Reqcore +1.3pp (46% → 47.3%)
▲PostgreSQL +1.1pp (28.6% → 29.7%)

Aug 19, 2026vs Aug 18, 2026

▲ INFreeATS entered the top 10 (#11 → #10)
▼ OUTRabbitHR left the top 10 (#10 → #11)
▲FreeATS moved #11 → #10
▼RabbitHR moved #10 → #11
▼ERPNext -7.6pp (39.3% → 31.7%)
▼Odoo -5.6pp (40.5% → 34.9%)
▼OrangeHRM -4.7pp (47.6% → 42.9%)
▼PostgreSQL -3.5pp (32.1% → 28.6%)
▼Recruitment -3.2pp (66.7% → 63.5%)
▼Reqcore -2.8pp (48.8% → 46%)
▼RabbitHR -2.8pp (25% → 22.2%)
▼Docker -2.7pp (44% → 41.3%)
▼OpenCATS -2pp (79.8% → 77.8%)
▼Horilla -1.6pp (28.6% → 27%)
▲FreeATS +1.6pp (23.8% → 25.4%)

Aug 18, 2026vs Aug 17, 2026

No change above the noise floor.

Aug 17, 2026vs Aug 16, 2026

No change above the noise floor.

Aug 16, 2026vs Aug 15, 2026

No change above the noise floor.

Aug 15, 2026vs Aug 14, 2026

No change above the noise floor.

The ranking, date by date

Top 10 on each archived date, exactly as published. Cite a date and it stays true: snapshots are append-only, and a correction appends a new revision rather than overwriting the original.

Sep 8, 202656 sampled answers · window 2026-08-11 – 2026-09-08 · rules v7

#1OpenCATS73.2%
#2Recruitment60.7%
#3ERPNext44.6%
#4OrangeHRM42.9%
#5Reqcore37.5%
#6Odoo37.5%
#7Horilla35.7%
#8Docker32.1%
#9RabbitHR32.1%
#10PostgreSQL30.4%

Sep 7, 202635 sampled answers · window 2026-08-10 – 2026-09-07 · rules v7

#1OpenCATS68.6%
#2Recruitment51.4%
#3Reqcore45.7%
#4ERPNext42.9%
#5Docker37.1%
#6Horilla37.1%
#7Odoo37.1%
#8OrangeHRM37.1%
#9PostgreSQL34.3%
#10MySQL28.6%

Sep 6, 202642 sampled answers · window 2026-08-09 – 2026-09-06 · rules v5-7

#1OpenCATS69%
#2Recruitment52.4%
#3Reqcore42.9%
#4ERPNext38.1%
#5Odoo38.1%
#6Docker35.7%
#7Horilla35.7%
#8PostgreSQL33.3%
#9OrangeHRM31%
#10MySQL23.8%

Sep 5, 202663 sampled answers · window 2026-08-08 – 2026-09-05 · rules v5-7

#1OpenCATS74.6%
#2Recruitment57.1%
#3Reqcore44.4%
#4Docker38.1%
#5ERPNext38.1%
#6OrangeHRM33.3%
#7PostgreSQL31.7%
#8Odoo31.7%
#9Horilla28.6%
#10RabbitHR23.8%

Sep 4, 202663 sampled answers · window 2026-08-07 – 2026-09-04 · rules v5-7

#1OpenCATS74.6%
#2Recruitment57.1%
#3Reqcore44.4%
#4Docker38.1%
#5ERPNext38.1%
#6OrangeHRM33.3%
#7PostgreSQL31.7%
#8Odoo31.7%
#9Horilla28.6%
#10RabbitHR23.8%

Sep 3, 202663 sampled answers · window 2026-08-06 – 2026-09-03 · rules v5-7

#1OpenCATS74.6%
#2Recruitment57.1%
#3Reqcore44.4%
#4Docker38.1%
#5ERPNext38.1%
#6OrangeHRM33.3%
#7PostgreSQL31.7%
#8Odoo31.7%
#9Horilla28.6%
#10RabbitHR23.8%

Sep 2, 202663 sampled answers · window 2026-08-05 – 2026-09-02 · rules v5-7

#1OpenCATS74.6%
#2Recruitment57.1%
#3Reqcore44.4%
#4Docker38.1%
#5ERPNext38.1%
#6OrangeHRM33.3%
#7PostgreSQL31.7%
#8Odoo31.7%
#9Horilla28.6%
#10RabbitHR23.8%

Sep 1, 202663 sampled answers · window 2026-08-04 – 2026-09-01 · rules v5-7

#1OpenCATS74.6%
#2Recruitment57.1%
#3Reqcore44.4%
#4Docker38.1%
#5ERPNext38.1%
#6OrangeHRM33.3%
#7PostgreSQL31.7%
#8Odoo31.7%
#9Horilla28.6%
#10RabbitHR23.8%

Aug 31, 202663 sampled answers · window 2026-08-03 – 2026-08-31 · rules v5-7

#1OpenCATS74.6%
#2Recruitment57.1%
#3Reqcore44.4%
#4Docker38.1%
#5ERPNext38.1%
#6OrangeHRM33.3%
#7PostgreSQL31.7%
#8Odoo31.7%
#9Horilla28.6%
#10RabbitHR23.8%

Aug 30, 202663 sampled answers · window 2026-08-02 – 2026-08-30 · rules v5-7

#1OpenCATS74.6%
#2Recruitment57.1%
#3Reqcore44.4%
#4Docker38.1%
#5ERPNext38.1%
#6OrangeHRM33.3%
#7PostgreSQL31.7%
#8Odoo31.7%
#9Horilla28.6%
#10RabbitHR23.8%

Aug 29, 202663 sampled answers · window 2026-08-01 – 2026-08-29 · rules v5-7

#1OpenCATS74.6%
#2Recruitment57.1%
#3Reqcore44.4%
#4Docker38.1%
#5ERPNext38.1%
#6OrangeHRM33.3%
#7PostgreSQL31.7%
#8Odoo31.7%
#9Horilla28.6%
#10RabbitHR23.8%

Aug 28, 202663 sampled answers · window 2026-07-31 – 2026-08-28 · rules v5-7

#1OpenCATS74.6%
#2Recruitment57.1%
#3Reqcore44.4%
#4Docker38.1%
#5ERPNext38.1%
#6OrangeHRM33.3%
#7PostgreSQL31.7%
#8Odoo31.7%
#9Horilla28.6%
#10RabbitHR23.8%

Aug 27, 202663 sampled answers · window 2026-07-30 – 2026-08-27 · rules v5-7

#1OpenCATS74.6%
#2Recruitment57.1%
#3Reqcore44.4%
#4Docker38.1%
#5ERPNext38.1%
#6OrangeHRM33.3%
#7PostgreSQL31.7%
#8Odoo31.7%
#9Horilla28.6%
#10RabbitHR23.8%

Aug 26, 202677 sampled answers · window 2026-07-29 – 2026-08-26 · rules v4-7

#1OpenCATS75.3%
#2Recruitment59.7%
#3Reqcore45.5%
#4Docker39%
#5OrangeHRM39%
#6ERPNext37.7%
#7PostgreSQL32.5%
#8Odoo32.5%
#9Horilla31.2%
#10RabbitHR26%

Aug 25, 202677 sampled answers · window 2026-07-28 – 2026-08-25 · rules v4-7

#1OpenCATS75.3%
#2Recruitment59.7%
#3Reqcore45.5%
#4Docker39%
#5OrangeHRM39%
#6ERPNext37.7%
#7PostgreSQL32.5%
#8Odoo32.5%
#9Horilla31.2%
#10RabbitHR26%

Aug 24, 202677 sampled answers · window 2026-07-27 – 2026-08-24 · rules v4-7

#1OpenCATS75.3%
#2Recruitment59.7%
#3Reqcore45.5%
#4Docker39%
#5OrangeHRM39%
#6ERPNext37.7%
#7PostgreSQL32.5%
#8Odoo32.5%
#9Horilla31.2%
#10RabbitHR26%

Aug 23, 202677 sampled answers · window 2026-07-26 – 2026-08-23 · rules v4-7

#1OpenCATS75.3%
#2Recruitment59.7%
#3Reqcore45.5%
#4Docker39%
#5OrangeHRM39%
#6ERPNext37.7%
#7PostgreSQL32.5%
#8Odoo32.5%
#9Horilla31.2%
#10RabbitHR26%

Aug 22, 202691 sampled answers · window 2026-07-25 – 2026-08-22 · rules v4-7

#1OpenCATS74.7%
#2Recruitment60.4%
#3Reqcore45.1%
#4OrangeHRM41.8%
#5Docker40.7%
#6ERPNext35.2%
#7Odoo33%
#8PostgreSQL31.9%
#9Horilla31.9%
#10RabbitHR25.3%

Aug 21, 202698 sampled answers · window 2026-07-24 – 2026-08-21 · rules v4-7

#1OpenCATS74.5%
#2Recruitment59.2%
#3Reqcore45.9%
#4OrangeHRM40.8%
#5Docker39.8%
#6ERPNext35.7%
#7Odoo35.7%
#8PostgreSQL30.6%
#9Horilla30.6%
#10RabbitHR23.5%

Aug 20, 202691 sampled answers · window 2026-07-23 – 2026-08-20 · rules v4-7

#1OpenCATS75.8%
#2Recruitment59.3%
#3Reqcore47.3%
#4OrangeHRM42.9%
#5Docker41.8%
#6ERPNext36.3%
#7Odoo36.3%
#8PostgreSQL29.7%
#9Horilla29.7%
#10RabbitHR25.3%

Aug 19, 202663 sampled answers · window 2026-07-22 – 2026-08-19 · rules v4-5

#1OpenCATS77.8%
#2Recruitment63.5%
#3Reqcore46%
#4OrangeHRM42.9%
#5Docker41.3%
#6Odoo34.9%
#7ERPNext31.7%
#8PostgreSQL28.6%
#9Horilla27%
#10FreeATS25.4%

Aug 18, 202684 sampled answers · window 2026-07-21 – 2026-08-18 · rules v4-5

#1OpenCATS79.8%
#2Recruitment66.7%
#3Reqcore48.8%
#4OrangeHRM47.6%
#5Docker44%
#6Odoo40.5%
#7ERPNext39.3%
#8PostgreSQL32.1%
#9Horilla28.6%
#10RabbitHR25%

Aug 17, 202684 sampled answers · window 2026-07-20 – 2026-08-17 · rules v4-5

#1OpenCATS79.8%
#2Recruitment66.7%
#3Reqcore48.8%
#4OrangeHRM47.6%
#5Docker44%
#6Odoo40.5%
#7ERPNext39.3%
#8PostgreSQL32.1%
#9Horilla28.6%
#10RabbitHR25%

Aug 16, 202684 sampled answers · window 2026-07-19 – 2026-08-16 · rules v4-5

#1OpenCATS79.8%
#2Recruitment66.7%
#3Reqcore48.8%
#4OrangeHRM47.6%
#5Docker44%
#6Odoo40.5%
#7ERPNext39.3%
#8PostgreSQL32.1%
#9Horilla28.6%
#10RabbitHR25%

Aug 15, 202684 sampled answers · window 2026-07-18 – 2026-08-15 · rules v4-5

#1OpenCATS79.8%
#2Recruitment66.7%
#3Reqcore48.8%
#4OrangeHRM47.6%
#5Docker44%
#6Odoo40.5%
#7ERPNext39.3%
#8PostgreSQL32.1%
#9Horilla28.6%
#10RabbitHR25%

Aug 14, 202684 sampled answers · window 2026-07-17 – 2026-08-14 · rules v4-5

#1OpenCATS79.8%
#2Recruitment66.7%
#3Reqcore48.8%
#4OrangeHRM47.6%
#5Docker44%
#6Odoo40.5%
#7ERPNext39.3%
#8PostgreSQL32.1%
#9Horilla28.6%
#10RabbitHR25%

Read any date directly

Every archived date is machine-readable at /api/index/self-hosted-applicant-tracking/as-of/<YYYY-MM-DD>, which returns the ranking as it stood, with the extraction version and revision it was published under. Dates before the record begins return no_record rather than a recomputation — we do not reconstruct history on demand and present it as what we said. See what the engines actually said.

[ORBATOR]