Here are the top 3 alternatives to CubeUpload, focusing on free image hosting with direct linking support:

1.ImgBB

• Best for: Reliability and ease of use
• Features: No registration required, multiple upload options, direct links, API available
• Limits: 32MB per image, images stored indefinitely even without account
• Pros: Clean interface, reliable service, good compression options

2.Imgur

• Best for: Community + hosting combo
• Features: Free hosting, albums, editing tools, community features
• Limits: Upload limits for unregistered users, stricter on hotlinking
• Pros: Massive user base, mobile apps, established reputation

3.Catbox

• Best for: Simplicity and anonymity
• Features: No registration, direct links, file hosting (not just images)
• Limits: 200MB per file, files stored long-term with occasional purges
• Pros: Extremely simple, no frills, accepts various file types

Quick Comparison:

• For casual users: ImgBB (most similar to CubeUpload)
• For community engagement: Imgur
• For temporary/anonymous sharing: Catbox
• Bonus mention: Postimages - Good alternative with custom expiration settings

All these offer direct image linking, which was CubeUpload is main feature. Would you like more details about any specific platform or their upload/bandwidth limits?