third-party software noun [U]

(IT )

computer programs which add to the range of functions that existing programs can perform, that are developed or supplied by a different company from the one that develops or supplies the existing software:

third-party plug-ins

third-party software developers

• upkeep
• uplift
• upload
• upmarket
• upscale
• upselling
• upside
• upsize
• upskill
• upstart
• upstream
• upsurge
• upswing
• uptick
• uptime
• up to date
• up to the minute
• uptrend
• upturn
• upwardly mobile
• URL
• usability
• usance
• USB
• use-by date