Gargoyle's aqm is an alternative to Streamboost. With Gargoyle 1.7, fq_codel is inherited from the Linux kernel of openwrt's Barrier Breaker, making it at par with Streamboost. If you want all the options of openwrt, including IPV6 support, then Chaos Calmer surpasses Streamboost with extra features. Openwrt has fq_codel and sqm to put it at par with Streamboost, with Chaos Calmer.