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Provider Coverage Matrix ​

AeroFTP classifies each supported provider with a Coverage Class (A, B, C, D) and a numeric score out of 100. The rubric is deterministic, speed-independent, and designed to reflect the end-to-end experience of running production workloads on AeroFTP + provider.

Coverage Class ​

Scoring rubric (100 pt) ​

Speed is deliberately excluded: throughput depends on distance from the provider endpoint and on local network conditions, not on the client implementation.

Stable Core ​

Scores below reflect an encoding sweep completed 2026-04-18 on live accounts (Seafile, Jianguoyun and CloudMe pending), with SHA-256 end-to-end verification on 1 MB round-trip. Matrix refresh 2026-04-19:

• Reconciliation flipped to ✅ for SFTP and S3-compatible providers after the path canonicalization fix. cmd_check, cmd_reconcile, and cmd_sync now delegate to sync_core::scan_remote_tree + compare_trees, which track relative paths via the scan queue state instead of stripping the remote prefix from provider-returned absolute paths.
• Alibaba OSS encoding lifted to 5/10 after the S3 listing panic on multibyte keys was fixed (byte-slice on XML preview replaced with char-aware truncation); Class promoted from C to B with Navigation full 15/15.
• WebDAV Navigation benchmark completed on Seafile, Jianguoyun, CloudMe, DriveHQ, and InfiniCloud JP - all five promoted from ⏳ pending to ✅ after tree --depth 2 and find returned the expected structure on live accounts.
• Structural not exposed by API / not applicable entries use - instead of ⚠️ to avoid confusion with real partial-pass warnings.

Provider	Protocol	Class	Score	Integrity	Navigation	Advanced	Encoding	Reconcile
Dropbox	Dropbox API	A	95	✅	✅	✅	✅ 10/10	✅
kDrive	Infomaniak API	A	93	✅	✅	✅	✅ 10/10	✅
Yandex Disk	Native API	A	92	✅	✅	✅	✅ 10/10	✅
FileLu API	Native API	A	92	✅	✅	✅	✅ 9/10	✅
FeliCloud	WebDAV (Nextcloud)	A	90	✅	✅	✅	◑ 7/10	✅
SFTP server on a NAS	SFTP	A	90	✅	✅	✅	✅	✅
AWS S3	S3	A	90	✅	✅	✅	◑ 5/10	✅
Google Cloud Storage	S3	A	90	✅	✅	✅	◑ 7/10	✅
iDrive e2	S3	B	89	✅	✅	✅	◑ 6/10	✅
MEGA S4	S3	B	89	✅	✅	✅	◑ 6/10	✅
Storj	S3 Gateway	B	89	✅	✅	✅	◑ 6/10	✅
Wasabi	S3	B	89	✅	✅	✅	◑ 6/10	✅
Backblaze B2	S3	B	88	✅	✅	✅	◑ 5/10	✅
Cloudflare R2	S3	B	88	✅	✅	✅	◑ 5/10	✅
FileLu S3	S3 (S5)	B	88	✅	✅	✅	◑ 5/10	✅
Tencent COS	S3	B	88	✅	✅	✅	◑ 5/10	✅
Koofr	WebDAV	B	86	✅	✅	✅	◑ 5/10	✅
DriveHQ	WebDAV	B	85	✅	✅	✅	◑ 8/10	✅
InfiniCloud JP	WebDAV	B	83	✅	✅	✅	◑ 7/10	✅
Seafile	WebDAV (seafdav)	B	78	✅	✅	⏳	⏳	✅
Jianguoyun	WebDAV	B	77	✅	✅	⏳	⏳	✅
CloudMe	WebDAV	B	76	✅	✅	⏳	⏳	✅
Alibaba OSS	S3	B	73	✅	✅	✅	◑ 5/10	✅

Legend: ✅ full pass · ◑ partial pass · ⏳ pending benchmark · ❌ fail · - not applicable

Notes on score dimensions ​

• Encoding Robustness is measured on live accounts for every provider in this matrix except Seafile, Jianguoyun and CloudMe, which are pending. The sweep covers 10 file names including unicode, emoji, spaces, and the ASCII special set & ' # % ( ) +.
• Native / API providers (Dropbox, kDrive, Yandex, FileLu) handle all 10 names cleanly. FileLu is at 9/10 because emoji is stored correctly but rendered as ???? in the listing (server-side transliteration).
• S3-compatible providers consistently trip on the same set (% signature mismatch, + reject, & / ' XML split in listing, # URL fragment truncation). These were AeroFTP client issues, not provider issues. Fixes shipped in v3.6.6 (XML entity decoding in listing keys), v3.7.7 (per-segment key encoding) and v4.1.7 (whitespace kept inside listing keys). The encoding column still shows the 2026-04-18 sweep and will be refreshed at the next scored sweep.
• Reconciliation on object-storage and cloud APIs is now ✅ after the 2026-04-19 path canonicalization fix. The previous ⚠️ requires explicit path note referred to a client-side scan bug that has been eliminated; integrity of the transferred data was never affected.
• InfiniCloud JP, DriveHQ were benchmarked on Navigation 2026-04-19 and promoted to 15/15 after tree + find validated the full recursive surface.
• Seafile, Jianguoyun, and CloudMe entered the matrix at Class B after 2026-04-19 live listing + reconcile + navigation verification. Advanced features (share/versions/trash) and encoding sweep still pending - score will refresh once those dimensions are benchmarked.
• Alibaba OSS moved to Class B after the S3 listing panic on multibyte keys was eliminated (F-P1 fix: s3.rs debug preview now uses char-aware truncation instead of a raw byte slice). It shared the S3-family encoding gaps on %, &, ', # measured in April, for which client fixes have shipped since (see above).
• Symbol convention: ◑ (partial) is used for real partial passes (e.g. encoding 5-9/10). - is used for N/A / not exposed by API / not applicable structural gaps - these are not errors and should not be read as warnings.

Detail pages ​

• S3-compatible providers - AWS, Backblaze, Storj, Wasabi, Cloudflare R2
• WebDAV providers - Koofr, FeliCloud, InfiniCloud JP, DriveHQ

Providers not yet in the public matrix ​

Several additional providers (pCloud, Filen, Internxt, MEGA, 4shared, Zoho WorkDrive, Drime, FileLu WebDAV, Box, OneDrive, Google Drive, Jottacloud) are covered in internal test runs with mixed status. They will enter the public matrix once their scoring stabilizes across the full rubric.

2026-04-19 note: the internal sweep validated ls / on 25 of 31 vault profiles post-fix batch. Jottacloud is now fully re-runnable (grant_type=refresh_token lowercase fix) but not yet scored on the full rubric.

Update policy ​

The matrix is revisited after every significant test run consolidation. Scores may change when:

• New rubric dimensions are benchmarked on previously-untested providers
• Provider-side changes affect an operation class
• Rubric weights are re-balanced (only in major revisions of the methodology)

See methodology for the reproducibility protocol.