As meaning dry summer? Oof. Those droughts are the worst. Here's a quick-and-dirty list. For the sake of easy management, I won't list any vines or short-lived plants. Trees and shrubs and palms only. This is by no means exhaustive. No guarantees of accuracy.

More Suitable

Depending on the exact temperatures and precipitation at your site, as well as the soil, these would probably do well.

• Adansonia digitata (savanna / dry forest)
• Anacolosa frutescens (mixed forest)
• Annona senegalensis (savanna / gallery forest)
• Antidesma bunius (mixed forest)
• Breynia androgyna (humid forest edge)
• Byrsonima crassifolia (savanna / open woodland)
• Canarium schweinfurthii (rainforest or gallery forest)
• Carissa macrocarpa (open woodland / scrub)
• Chrysophyllum lacourtianum (semi-deciduous forest)
• Citrus hystrix
• Citrus japonica
• Citrus × latifolia
• Citrus × limon 'Improved Meyer'*
• Citrus × nobilis*
• Citrus × sinensis*
• Cordiera sessilis (gallery forest / savanna woodland)
• Dillenia indica (evergreen rainforest or gallery forest)
• Ficus carica* (dry forest / savanna)
• Flacourtia indica (dry forest)
• Garcinia xanthochymus (humid forest)
• Limonia acidissima
• Mangifera indica*
• Morinda citrifolia
• Morus macroura
• Mouriri guianensis (rainforest, mixed forest, savanna)
• Myrciaria tenella (seasonal forest)
• Pometia pinnata (open woodland / gallery forest)
• Pouteria gardneriana (gallery forest)
• Pouteria macrophylla (coastal moist forest)
• Pouteria venosa (savanna / dry forest / moist forest)
• Sclerocarya birrea subsp. caffra (dry forest / savanna woodland)
• Sonneratia caseolaris (tidal muck)
• Spondias dulcis (secondary forest / dry forest)
• Spondias purpurea (secondary forest / open woodland)
• Syzygium samarangense (rainforest or high water table)
• Terminalia catappa (dry forest / mixed forest)
• Ximenia americana (dry forest / scrub)
• Ziziphus mauritiana* (dry forest / savanna / scrub)

More Questionable

These plants might be suitable depending on the specific climate conditions at your site. Some of them would not do well with too much rain in the wet season, while others would always require irrigation in the dry season. Some of them could survive the climate just fine, but fruiting is questionable due to the wet and dry seasons being inverted. Many more plants native to Aw regions could probably be included here, but these seem (potentially) more suitable for dry summers.

• Alibertia edulis (savanna / open woodland)
• Allagoptera arenaria (sand dunes / scrub / coastal forest)
• Allagoptera caudescens (savanna / open woodland)
• Annona squamosa* (secondary forest / open woodland)
• Ardisia compressa (humid forest)
• Artocarpus heterophyllus* (rainforest / gallery forest)
• Canarium album (mixed forest)
• Ceratonia siliqua (dry forest)
• Dovyalis caffra (savanna / scrub / open woodland)
• Eugenia luschnathiana (deciduous forest / open woodland)
• Flacourtia jangomas (mixed forest)
• Genipa americana (moist forest / gallery forest)
• Inga spectabilis* (moist forest / gallery forest)
• Malpighia emarginata (moist forest)
• Manilkara zapota* (moist forest / gallery forest)
• Morus alba
• Nauclea xanthoxylon (high water table)
• Nephelium lappaceum (moist forest)
• Nephelium ramboutan-ake* (moist forest)
• Opuntia ficus-indica (open drylands)
• Plinia cauliflora × aureana
• Porcelia macrocarpa (secondary/seasonal moist forest)
• Pouteria grandiflora (secondary/seasonal moist forest)
• Punica granatum (steppe / dry forest)
• Syzygium aqueum (moist forest / gallery forest)
• Syzygium jambos (moist forest / gallery foret)
• Vangueria madagascariensis (open woodland)

* highly recommended if your conditions are suitable

Without knowing where you are, I can't recommend any seed/plant sources, but feel free to ask for more information about any of the plants that I listed. I also recommend these resources for information about food forests, especially in your climate.